How To Unlock SIM Cards Of Vivo Y78+ Without PUK Codes

How To Unlock SIM Cards Of Vivo Y78+ Without PUK Codes

Abner Lv13

How To Unlock SIM Cards Of Vivo Y78+ Without PUK Codes

Unintentionally locking your SIM card with an incorrect PIN is a common occurrence. It’s frustrating because it prevents you from accessing your essential mobile services. Thankfully, Personal Unblocking Key (PUK) codes offer a way to unlock it. However, what happens if you lose them?

This comprehensive guide explores how to unlock SIM cards without the PUK Codes. Whether you’re a techie or a tech noob, you’ll be sure to find easy solutions in this article. From directly contacting your mobile carrier to utilizing alternative unlocking techniques, you will see clear and concise instructions that empower you to navigate this technical hurdle.

back of sim packaging puk code

Part 1: Official Ways To Unlock SIM Cards With a Lost PUK Code

Locking your SIM card with a forgotten PIN can be a frustrating experience, especially when your trusty PUK code seems to have vanished. While unauthorized methods exist to unlock your SIM card, venturing down that path can lead to complications and potential security risks. This guide prioritizes safe and official methods, ensuring a smooth and secure unlocking process with the help of your mobile carrier.

Firstly, remember that the PUK code typically arrives alongside your SIM card in its original packaging. Keeping this information safe alongside your other crucial documents is always helpful. However, if memory betrays you and the packaging is nowhere to be found, this part will show you how to unlock SIM cards without PUK codes with the help of your carrier.

Method 1: Contacting Your Carrier’s Customer Service

The most straightforward approach is contacting your mobile carrier’s customer service department directly. Their representatives are trained to assist in such situations and can verify your identity before providing the PUK code. Be prepared to answer security questions and provide relevant account details to ensure a smooth process.

customer service

Here’s what you’ll need:

  • Ready your information. Prepare your account number, phone number, and any other relevant details your carrier might require for verification.
  • Find the best contact option for you. Most carriers offer multiple options like phone calls, online chat, or visiting a physical store. Opt for the method that best suits your preference and availability.
  • Prepare a written report of what happened. Clearly state that you’ve locked your SIM card by entering an incorrect PIN and have lost your PUK code.
  • **Verify your identity.**Answer the security questions or provide the requested account details to confirm that you’re the authorized user.
  • Receive your PUK code/new SIM card. Once verified, the representative will provide you with your PUK code. Be sure to write it down in a secure location for future reference. They might offer you a replaced SIM card if no PUK codes exist.
  • **Unlock your SIM card.**Enter the PUK code on your phone following the specific instructions provided by your carrier. This typically involves entering the PUK code followed by a new PIN.

Method 2: Retrieving the PUK Code Through Your Carrier’s Website

Many mobile carriers offer self-service options on their websites, allowing you to manage your account and access information independently. If your carrier provides this functionality, you can retrieve your PUK code online without contacting customer service. This way, you’ll learn how to unlock SIM cards without PUK numbers.

Here’s how it might work:

  • Step 1: Navigate to the secure section of your account using your login credentials. For example, this is what you can see from the JIO website:

jio website

  • Step 2: Different carriers have varying website layouts, so refer to their specific instructions or search features to find the dedicated section for retrieving PUK codes.
  • Step 3: Similar to contacting customer service, you might need to verify your account ownership through security questions or other verification methods.
  • Step 4: Once verified, your PUK code should be displayed on the screen or sent to your registered email address.

Remember, these steps are general guidelines, and specific procedures may vary depending on your carrier. Consult your carrier’s website or contact customer service for the most accurate and up-to-date information.

By following these official routes, you can safely and securely bypass the PUK code hurdle and regain access to your vital mobile services. Stay tuned for Part 2, where you’ll explore alternative unlocking methods for those who prefer a different approach.

Part 2: Unlocking SIM Cards With the Help of a Third-Party Tool

While official methods through your carrier are always recommended, some situations might arise where you’ll need to learn how to unlock SIM cards without PUK codes. Third-party tools like Wondershare Dr.Fone offer an alternative approach in such cases. This section explores this option, emphasizing transparency and responsible usage.

Disclaimer: Before proceeding, be aware that utilizing third-party tools might void your device’s warranty and potentially introduce security risks. Choose trusted, reputable applications with clear user guides and a history of responsible operation. Proceed with caution and at your discretion.

Introducing Wondershare Dr.Fone

Dr.Fone stands out as a trusted and versatile tool for SIM unlocking. It surpasses mere unlocking functionality, offering a comprehensive suite of features like data repair, system repair, screen unlock, and more, catering to various mobile needs under one software. With over 50 million active users, Dr.Fone boasts a solid reputation for reliability and effectiveness.

Unlocking Your SIM With Dr.Fone

Dr.Fone’s SIM unlocking capability resides within its “Screen Unlock” feature. This powerful toolset caters to bypassing various locks, including Apple ID, Google accounts, and more. Remember, this feature is intended for legitimate use only, respecting device ownership and security protocols. Either way, it’s a great way to know how to unlock SIM cards with iPhones without PUK codes.

To use this powerful feature, follow the steps below:

  • Step 1: Grab Dr.Fone from its official website, install it, and fire it up.

  • Step 2: Head to Toolbox > Screen Unlock > iOS (remember, only for iOS devices).

dr.fone homepage

  • Step 3: Click Remove SIM Locked to start the unlocking process.

dr.fone screen unlock page

  • Step 4: Click Start when you see this page.

dr.fone sim unlock page

  • Step 5: Verify your device details and hit Unlock Now.

dr.fone sim phone verify page

  • Step 6: Be aware that jailbreaking your iPhone is necessary. Use the provided JailBreak Guide or Watch Video if needed.

dr.fone sim jailbreak page

  • Step 7: Carefully follow the on-screen instructions to ensure a smooth process. Then, click Continue.

dr.fone instructions sim operation

  • Step 8: Once finished, click Done to enjoy your unlocked SIM card!

dr.fone sim lock removal success

Conclusion

Navigating SIM card lockouts can be stressful, but remember, you have options! While official routes through your carrier are always recommended, tools like Wondershare Dr.Fone teach how to unlock SIM cards without PUK codes. Remember, responsible usage is key when choosing third-party tools. If you opt for this route, Dr.Fone stands out for its reliability and extensive features beyond SIM unlocking.

So, breathe easy, explore your options, and choose the path best suits your situation. With the right approach, you’ll use your unlocked SIM card quickly! And if your phone needs some help, remember that Dr.Fone is there to help you unlock not only your SIM but also a world of possibilities for your mobile companion.

Top 11 Free Apps to Check IMEI on Vivo Y78+ Phones

Your IMEI number is your device’s identity and being able to use it to check the legitimacy of your device should be easy. There are lots of websites that allow you to easily check your IMEI but in this world where we use our mobile devices more, most of us want the convenience of being able to perform this task on our devices.

For this reason, we saw it fit to compile a list of the best Android and iOS apps that allow you to easily do an IMEI check. Those apps are listed below.

Part 1: Top 6 Android Apps to Check your IMEI Number

1. IMEI info

imei info

The site IMEI info does just what the name suggest. It allows you to enter your IMEI (International Mobile Equipment Identity) number and immediately get information about your device. This unique 15-digit number is used to identify and track mobile devices, as well as to provide information about the Vivo Y78+ device’s brand, model, specifications, and other details.

It is easy to use and a great solution if you are just looking for a simple solution to find more information about your device using your IMEI number. Users can enter their device’s IMEI number on the website to check its status, verify its authenticity, and access other useful information. This can be helpful in situations such as purchasing a used device or finding lost or stolen devices.

Link: https://www.imei.info/

imei info

Pros:

  • User-friendly interface.
  • Provides detailed device information.
  • Checks blacklist and warranty status.
  • Offers additional services, such as phone unlocking.
  • Compatible with various devices and manufacturers.

Cons:

  • Limited information for some devices.
  • May provide outdated or inaccurate data.
  • Requires manual entry of IMEI.
  • Premium features require payment.
  • Privacy concerns when sharing IMEI.

Read Customer Service Reviews of imei.info

  1. _This page was very helpful when my phone was stolen, and with it’s help I could check it’s IMEI status! Also you can find lots of basic and more advanced informations about different devices on this page, which can be very helpful too! – from Trustpilot _
  2. _Information did you provided me is wrong, because several times I contacted to Sprint and T-Mobile bile, and then confirm that the phone by IMEI that I provided he’s not in their database. – from Trustpilot _

Tips: You’re going on a trip to Frankfort, but forgot to unlock your iPhone. You need to unlock it first, because you will get a message: “This iPhone is locked and cannot be used with another carrier.” I highly recommend using Dr.Fone - Screen Unlock (iOS) to remove SIM lock if you have the need. This software is user-friendly, effective, and reliable, ensuring that your device is unlocked without any issues.

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### 2\. IMEI Analyzer

imei analyzer logo

Aside from just allowing you to check whether the IMEI number provided is valid, IMEI Analyzer will also provide you with data about your device based on the IMEI (International Mobile Equipment Identity) number . It also has an additional feature that calculates the IMEI number when you enter only 15 digits. It also analyses the IMEI number providing you with different information about the number itself such as the Serial Number (SNR), Type Allocation Code (TAC), Reporting body identifier, Final Assembly Code, and Check Digit.

By using an IMEI Analyzer, users can validate the IMEI number, check if the Vivo Y78+ device is blacklisted or stolen, and obtain information about the Vivo Y78+ device’s brand, model, and specifications. This can be particularly useful when buying a used mobile device or trying to recover a lost or stolen one. Some IMEI analyzers may also provide additional features such as warranty status checks, carrier information, and SIM lock status.

Download Link: https://play.google.com/store/apps/details?id=org.vndnguyen.imeianalyze&hl=en

imei analyzer

Pros:

  • Provides detailed information about the Vivo Y78+ device’s IMEI number, including whether it is blacklisted or not.
  • Easy to use and navigate.
  • Free to download and use.
  • Helpful for those looking to buy a used phone and want to check its validity.

Cons:

  • Some users have reported that the app crashes frequently.
  • Limited features beyond IMEI analysis.
  • Some users have reported inaccuracies in the information provided by the app.

3. IMEI Generator & IMEI Changer

imei changer

IMEI Changer is an app that will not only provide you with information about your device based on your IMEI number but also can be used to generate an IMEI number for your device. The developers however caution that the App may not be able to work for all mobile phones or SIM cards.

imei changer

Pros:

  • Easy to use interface.
  • Provides detailed information about the Vivo Y78+ device’s IMEI number.
  • Offers free IMEI checks for basic information.
  • Provides in-app purchases for more detailed information.
  • Supports multiple languages.

Cons:

  • Requires a stable internet connection to function properly.
  • Some users have reported inaccurate or incomplete information.
  • In-app purchases can be expensive.
  • Some users have reported issues with the app crashing or freezing.

4. IMEI

imei

IMEI just like all the others we’ve seen allows the user to get information on their devices based on their IMEI numbers. But that’s not all. Unlike others this one also allows users to quickly generate their IMEI numbers. It also has a lot of good reviews from those who have used it.

Download Link: https://play.google.com/store/apps/details?id=com.gerondesign.imei&hl=en

free apps on IMEI check

Pros:

  • User-friendly interface.
  • Quick IMEI scanning and checking.
  • Detailed device information provided.
  • Wide device compatibility.
  • Free to download and use.

Cons:

  • Free to download and use.
  • Limited to IMEI-specific features.
  • Possible information inaccuracies.
  • Infrequent updates.

5. IMEI Checker

imei checker

IMEI Checker is another free Android app that is designed to help you find out more information about your device using the IMEI number. This small app is easy to use and most who have used have a lot of praise for the app.

The app allows users to check the IMEI number of their devices and gather detailed information such as the manufacturer, model, and blacklist status. This can be helpful for tracking lost or stolen devices and verifying the authenticity of a phone before purchasing it. Additionally, the app provides device information like hardware and software specifications, system details, and network information.

Download Link: https://play.google.com/store/apps/details?id=com.imeichecker.imeinumberfinder.deviceinfostatus

imei checker

Pros:

  • Easy-to-use interface.
  • Quick IMEI scanning and analysis.
  • Detailed device information provided.
  • Useful for device verification before purchase.
  • Offers hardware and software specifications.

Cons:

  • Requires internet connection for IMEI check.
  • May not support all devices or brands.
  • Some users report inaccuracies in information.
  • Advertisements may be intrusive for some users.

Read Customer Service Reviews of IMEI Checker

  1. IMEI is an exceptionally astounding and remarkable application. This is not difficult to utilize this application. Everybody can find their IMEI number through this application. By and by I like and love this application. Thus, thank you kindly IMEI checker. – from Google Play
  2. It’s show only your device information like what is your IMEI number, mobile no. etc, it’s not tracker . – from Google Play

6. SIM Card Information and IMEI

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![sim card info logo](https://images.wondershare.com/drfone/article/2023/05/sim-card-info.jpg)

SIM Card Information and IMEI will check and generate your device’s IMEI number and allow you to copy or share the information on social networks or via email. On top of providing information about your device, the app also provides SIM related information such as the contacts that are stored on the Vivo Y78+ device.

Download Link: https://m.apkpure.com/sim-card-information-and-imei/com.simcard.info.imei

free apps on IMEI check

Pros:

  • Simple user interface.
  • Useful for tracking lost or stolen devices.
  • Can check SIM card usage and balance.

Cons:

  • Requires an internet connection for some features.
  • Limited to IMEI and SIM card-related functionalities.
  • Privacy concerns regarding sharing of SIM and IMEI data.

Dr.Fone - Screen Unlock (iOS)

Unlock iPhone/iPad Without Passcode

  • Unlock Face ID, Touch ID, Apple ID without password.
  • Bypass the iCloud activation lock without hassle.New icon
  • Remove iPhone carrier restrictions for unlimited usage.
  • No tech knowledge required, Simple, click-through, process.

3,981,454 people have downloaded it

Part 2: Top 5 iPhone Apps to Check your IMEI Number

1. MobiCheck

mobicheck logo

By entering your IMEI number in this app, you can check whether your device has been marked as stolen or blacklisted. All you have to do is enter your IMEI number into the slot provided and the MobiCheck app will display the information. You can download the app for free and your first check is free but all subsequent checks will cost you $0.20 per check.

Download Link: https://itunes.apple.com/us/app/mobicheck/id1057556237

mobicheck

Pros:

  • Simple and user-friendly interface.
  • Cloud and Find My iPhone status checks.
  • Compatible with both iPhone and iPad.

Cons:

  • In-app purchases for full functionality.
  • Limited to IMEI and device-related features.
  • Updates may not be frequent or address all issues.

Read Customer Service Reviews of MobiCheck

  1. This app works !! Even better that is free! – from App Store
  2. I’m stuck in a loop where it keeps telling me to confirm my account with an email sent to me, then I try to log in after confirming and it tells me my account has not been fully set up. Kept going back and forth with the same issue so I gave up and deleted the app. Total garbage, will update when/if issue fixed. – from App Store

2. iMei Blacklist Checker

iMei Blacklist Checker is another app that will allow you to get your device details just by entering the IMEI number. This app is available for the iPhone and iPad. It provides a wide range of information about your device and is very easy to use. Moreover, if you want to buy a second-hand iPhone, you can use this tool to check if the phone has been reported as lost or stolen before making the final purchase decision.

free apps on IMEI check

3. IMEI info for iPhone

imei info

IMEI info for iPhone is an application that allows you to check the status of your device by simply entering you IMEI number. The developers behind the app also offer an unlocking service that also utilizes your IMEI number. This is a great app that is very useful and easy to use.

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free apps on IMEI check

Download Link: http://www.imei.info/

4. iPhoneOX

iphoneox

This site iPhoneOX offers a lot of services that include checking IMEI for free as well as unlocking services that are offered at a fee. It is a great and easy-to-use solution that will provide you with additional information about your device and even offer help whenever you get stuck.

free apps on IMEI check

Link: http://www.iphoneox.com/

5. iUnlocker

iunlocker logo

iUnlocker is another great application that will help you get information about your device from your IMEI number. It can also allow you to check a large number of IMEI numbers at once. Checking is free although they do offer an unlocking service that you will have to pay.

iunlocker logo

Link: http://iunlocker.net/check_imei.php

Dr.Fone - Screen Unlock (Android)

Remove Android lock screen in 5 minutes

  • Pattern, PIN, password, fingerprints & face screen lock can all be unlocked.
  • Bypass Android FRP lock without a PIN or Google account.New icon
  • Unlock mainstream Android brands like Samsung, Huawei, LG, Xiaomi, etc.
  • No tech knowledge required, Simple, click-through, process.

3,981,454 people have downloaded it

Conclusion

In conclusion, these are the top free apps to check IMEI on iPhone and Android devices. These apps provide detailed information about the Vivo Y78+ device, including the manufacturer, model, and serial number. Additionally, they provide information about the network carrier, blacklist status, and warranty status. Users can also track their lost or stolen device using the IMEI number. These apps are essential tools for ensuring the security and compatibility of mobile devices.

All of these are ideal for helping you with IMEI checking. They can be great solutions and we hope that you are able to find the right one for your needs. Let us know how the one you pick works for you and if you encounter any problems while using any of the apps.

Tips: If you have ever had your iPhone locked, you know how frustrating it can be. You need to get a new SIM card and pay the carrier a lot of money, but with Dr.Fone - Screen Unlock (iOS) you can unlock your iPhone easily, quickly and safely for international use, and bypass the carrier SIM lock in many situations like “SIM Not Support “, “SIM Not Valid”, “SIM Locked” or “No Network Serves”.

Network Locked SIM Card Inserted On Your Vivo Y78+ Phone? Unlock It Now

Carriers provide cellular connections so you can access the Internet, send text messages, and make phone calls without Wi-Fi. You cannot escape the carriers once you begin using a cell phone.

Customers can purchase a new handset via carriers or the mobile phone market. You may need an unlocked phone if you wish to use a different carrier’s service on your smartphone. However, if you want a gadget linked to a specific SIM card, you may buy one from the carriers for a reduced price.

Part 1: What Does It Mean If Your Vivo Y78+ Asks for SIM Network PIN?

When your phone prompts you to enter a SIM Network Unlock PIN, it means that your device is currently locked to a specific mobile network carrier, and it can only be used with SIM cards from that carrier. This locking mechanism is usually put in place by the carrier or the phone manufacturer to ensure that you continue to use their services, typically for the duration of a contract. As a result, your phone cannot be freely used with SIM cards from other carriers until it’s unlocked using the correct PIN or code.

sim locked

Part 2: Why Does Your Vivo Y78+ Say Invalid SIM Card – Network Locked SIM Card Inserted?

remove network lock

System Errors

Since SIM locking is a smartphone restriction implemented to stop it from being used on other networks, Android system errors can cause network-locked SIM cards. Resetting these errors can help unlock your network locked SIM card inserted device. Service providers decided to provide a formal SIM unlocking option as a result.

Because of this, any locked SIM may be readily unlocked, and once a device opens, it can work like a conventional mobile phone and with any SIM card of the user’s choosing.

Carrier Lock

The consumer must stick with the same service provider for a specific time after purchasing the bundled device and data pack. This is called a carrier lock on the Vivo Y78+ device and is one of the most common errors in network locked SIM card inserted devices. During that time, the Vivo Y78+ device will be network- or SIM-locked, prohibiting the user from changing service providers.

The user cannot change the SIM. The service provider will offer the SIM Unlock code needed to unlock the handset when the contract expires. The gadget can be used with any other SIM card and exported to another country without problems when the network lock has been removed.

Region Lock

Apple and AT&T initially worked together to implement the SIM lock and the SIM locked devices. The original purpose was to force the user to continue using the same service provider in a specific area or time.

However, some telecom service providers sell the handsets with select data plans as bundled plans in collaboration with the Vivo Y78+ device manufacturers. As a result, the handset will cost less than it would otherwise. Sometimes, these offers are particular to a specific region, called a carrier lock.

Firmware Problems

Sometimes, the Vivo Y78+ device manufacturers release many versions of the same firmware for different geographical locations.

As a result, it may be possible that the user may face contradictions in the agreement of device firmware and the network-locked SIM card that was supposed to be used on the Vivo Y78+ device. Due to firmware problems, the users may also face a network-locked SIM card-inserted device.

unlock sim card

Part 3: How to Unlock Network Locked SIM Card Inserted?

Unlocking a network-locked SIM card may seem like a complex task. However, it can be a straightforward process if you follow the right steps. In this section, we will guide you through the process of unlocking your network-locked SIM card. We will discuss 3 different ways you can unlock a network-locked SIM card inserted:

Method 1. Contact Network Carrier to Unlock Network Locked SIM

Contacting your network carrier is often the most recommended choice. It is a straightforward and reliable method to unlock your network-locked SIM card. Unlocking your network-locked SIM card through your carrier is a reliable and legal method. Before contacting your carrier, get information like your device’s IMEI number and account details. There are several ways to get in touch with your network carrier’s customer support.

You can call the customer support hotline, visit the website, or go to a physical store. The process usually involves receiving an unlock network code, which you need to use. Once you’ve entered the unlock code, your phone should display that it’s now unlocked. Test it with the new SIM card to ensure that it can make calls, send texts, and access mobile data without any issues.

Method 2. Use Online Unlock Service to Unlock Network Locked SIM

There are many online services available for unlocking a network-locked SIM card. In case you don’t want to go through your network carrier, these can be a good alternative. These services employ the IMEI number of the Vivo Y78+ device to unlock smartphones.

One such service is Canada Unlocking , which offers to unlock your network-locked SIM card via email. Follow these steps to unlock a network-locked SIM card via online services:

Step 1: Use a web browser to access an online SIM card unlocking service like Canada Unlocking. On the main page, choose your network carrier or device brand.

choose the network unlock service

Step 2: Follow it by providing the IMEI number of your device. Afterward, make the required payment, and you will receive the unlock code via email.

add the imei number

Method 3. Repair Your Vivo Y78+ Firmware If Your Unlocked Phone Suddenly Network Locked

Coming across “Network Locked SIM Card Inserted“ doesn’t necessarily mean that your SIM card is network locked. It can also happen due to a system bug or glitch. This can be the case if you suddenly face this issue after recently updating your device. In such scenarios, you need a reliable Android system repair tool like Wondershare Dr.Fone.

With this tool, you can repair Android OS system issues such as black screen of death, apps crashing, and many more. It supports over 1000 Android models across all major Android brands for system repair. Below are the steps you need to fix the network-locked SIM card issue:

Step 1: Download and Connect Wondershare Dr.Fone

First, download Wondershare Dr.Fone from its official website. Install the software on your system and launch it to proceed. Establish a connection between your Android and the system using a USB cable. Furthermore, access the “Toolbox” section and select “System Repair” to move forward.

choose system repair tool

Step 2: Add Your Vivo Y78+ Device Details

After selecting “System Repair,” you will proceed to a new window. Here, choose the “Android” button and proceed to the next screen to select “Start.” Now add your device details like “Brand”, “Name,” “Model,” “Country,” and “Carrier.” Then, checkmark the “I agree with the warning and I am ready to proceed” box from the bottom right corner and click “Next.”

add android smartphone details

Step 3: Solve the Network Locked SIM Card Inserted Issue

Now, you need to put your Android device into Download Mode. You can follow the instructions given on the screen for it. As soon as the Vivo Y78+ device is in Download Mode, Wondershare Dr.Fone will start downloading the firmware. Once it is downloaded and verified, click “Fix Now.”

Confirm your choice by inserting “000000” in the pop-up dialogue box and tap “Confirm.” It will start the Android repair process to fix all system issues.

press the fix now button

Bonus Tip. How to Unlock Network Locked Sim Card Inserted on iPhone?

If you want a fast and easy method to unlock your network-locked iPhone, you can use a third-party tool such as Dr.Fone – Screen Unlock (iOS). It is the best sim-unlock tool for iPhone users. It enables users to safely unlock their devices within five minutes. With Dr.Fone, you don’t have to wait for the sim-unlock code or reset your device firmware that can remove all your data.

You can download Dr.Fone on your PC and use it to unlock your iPhone without data loss. You can also use Dr.Fone to unlock your iPhone’s screen lock and Apple ID. Although Dr.Fone is a one-stop solution for all of your phone-related problems, its sim-unlock only works for Apple devices. Here is how you unlock your carrier-locked iPhone with Dr.Fone – Screen Unlock (IOS).

  • Download and install Dr.Fone on your PC. Launch the application and select the “Screen Unlock” tab from the list on the homepage.

homepage

  • Now, click on the “Remove SIM Locked” tab on the next page. You can only use it to unlock iPhones.

screen unlock page

  • Connect your iPhone and PC with a USB cable. Once your device is ready, click on the “Start” option to proceed with the sim unlock process.

remove sim locks

  • Next, the system will detect the Vivo Y78+ device connection, then its information will show up on your PC screen. If all of it is OK, click on the “Unlock Now” option.

verify your device

  • You cannot unlock your iPhone without a jailbreak, so you must do it before the system unlocks it. You can learn about the jailbreak process via the guide, or watching the video provided by Dr.Fone to jailbreak your iPhone is also feasible. The process is compatible with devices running iOS 12 to iOS 14.8.1.

jailbreak instructions

  • Now, you have to complete three tasks on your iPhone. First, put the SIM card out of your device. Open “Settings” and tap on the “WIFI” option. Tap on the blue exclamation mark next to all the connected networks and select “Forget This Network.” Now, switch off the “WIFI” and insert the locked SIM card in your iPhone. Click on the “Continue” option on your computer.

insert sim card

  • After that, Dr.Fone will automatically start the SIM unlocking process. You can see its progress on your PC. The process only takes a few minutes to complete, so you don’t have to wait for a long time.

sim unlock progress

  • After the process ends, all the sim restrictions on your iOS device are now removed and you can use sim cards from any network carrier. Next, click on the “Done” option to end the sim unlocking process.

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sim lock removed

Part 4: Why is SIM Unlocking Important?

As previously stated, a SIM lock enables a service provider to stop a customer from using the smartphone with the SIM cards of another service provider. This guarantees that the Vivo Y78+ device is only being used with the original SIM card for each provider. This locking also has a lot of drawbacks because it is incompatible with any other SIM card.

  1. The phone cannot be used with other SIM cards if the SIM lock is enabled. Customers must therefore adhere to the current plan as is.
  2. Since nobody wants to purchase a locked phone, it is hard for someone to sell or gift the mobile.
  3. Traveling abroad with a SIM-locked phone could provide some challenges because you won’t be able to use a local SIM card on the phone while you’re there.

All the problems can be fixed, and the SIM works in any nation with the removed SIM lock.

### Conclusion

Any of the methods above can work to get around the prohibition against using other SIM cards with your Android handset. The best thing about using Dr.Fone-Screen Unlock is that you don’t need unlocking codes to complete the tasks.


  • Title: How To Unlock SIM Cards Of Vivo Y78+ Without PUK Codes
  • Author: Abner
  • Created at : 2024-07-16 16:01:55
  • Updated at : 2024-07-17 16:01:55
  • Link: https://sim-unlock.techidaily.com/how-to-unlock-sim-cards-of-vivo-y78plus-without-puk-codes-by-drfone-android/
  • License: This work is licensed under CC BY-NC-SA 4.0.