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     How to Fix No SIM Card, Invalid SIM, Or SIM Card Failure Error on Samsung Galaxy A

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     How to Fix No SIM Card, Invalid SIM, Or SIM Card Failure Error on Android ZTE

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     How to Fix No SIM Found, Invalid SIM, Or SIM Card Failure Error on Android

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2. People also ask

   What happens if a SIM card is locked?

   • Security Features Activation: After a SIM card is locked due to incorrect PIN entries, a Personal Unblocking Key (PUK) is needed to unlock it. Exceeding PUK code attempts will lead to a blocked SIM card. There are a few different locks that you might run into with SIM cards:

   Sim Card Blocked: How To Unlock & Regain Access

   gadgetmates.com/sim-card-blocked

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   What happens if a SIM card is blocked?

   • Network Lock: In case of lost or stolen devices or suspected fraudulent activities, a mobile network operator might block a SIM card from network use. When your SIM card is blocked, you’re cut off from your mobile services. But don’t worry, with a few specific steps, you can unlock your SIM card, retrieve your PUK code, and prevent future locks.

   Sim Card Blocked: How To Unlock & Regain Access

   gadgetmates.com/sim-card-blocked

   See all results for this question

   Do I need a PUK code to unlock my SIM card?

   • Protecting your SIM card with a PIN can prevent unauthorized use of your cellular plan, but if you enter your SIM PIN incorrectly three times, you'll need an 8-digit PUK (Personal Unlocking Key) to unlock it. This wikiHow article will teach you how to get your PUK code from your mobile provider and unlock your SIM card. What's my SIM PIN?

   3 Ways to Unlock a Sim Card Without a PUK Code - wikiHow

   www.wikihow.com/Unlock-a-Sim-Card-Without-a-PUK-Code

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   How many times can I unlock my SIM card?

   • You only have three attempts to unlock your SIM card via PIN. If you input the wrong SIM PIN three times, your SIM card will be locked — cutting off access to voice and data. Stop inputting anything if you can’t remember your SIM PIN after a few tries. If you happen to fail 10 further input attempts, your SIM Card will be locked permanently.

   SIM PIN? Here’s What to Do If You’re Locked Out of Your SIM Card

   appletoolbox.com/sim-pin-heres-what-to-do-if-youre-locked-out-of-your-sim-card/

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   How do I unlock a password-protected SIM card?

   • The only way to unlock a password-protected SIM is to get a special code called a PUK (PIN unlock key) from your mobile provider. The provider may need you to prove your identity to give you this code. This wikiHow teaches you how to use a PUK to unlock your SIM card. Enter your SIM unlock code.

   How to Unlock a SIM: 5 Steps (with Pictures) - wikiHow

   www.wikihow.com/Unlock-a-SIM

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   How do I unlock my SIM card?

   • The only thing that will unlock your SIM is the PUK key. Don't try to guess the PUK, as entering it incorrectly too many times will permanently lock the SIM—if this happens, you'll have to replace the SIM entirely. Fortunately, your mobile provider will provide you the PUK so you can reset your SIM.

   3 Ways to Unlock a Sim Card Without a PUK Code - wikiHow

   www.wikihow.com/Unlock-a-Sim-Card-Without-a-PUK-Code

   See all results for this question

3. www.businessinsider.com › guides › tech7 Ways to Troubleshoot If Your SIM Card Is Not Working

   www.businessinsider.com › guides › tech

   • Cached

   Jul 15, 2022 · If you can't make a call or if you see an error message that your phone's SIM card is not working, there are several ways to troubleshoot the problem.

   • Founder: Henry Blodget

4. www.wikihow.com › Unlock-a-Sim-Card-Without-a-PUK-Code3 Ways to Unlock a Sim Card Without a PUK Code - wikiHow

   www.wikihow.com › Unlock-a-Sim-Card-Without-a-PUK-Code

   • Cached

   • Views: 98.7K

   • What's my SIM PIN? Your SIM PIN protects your SIM card from unauthorized use of your mobile service. If you've protected your SIM card with a PIN, your phone will ask for the SIM PIN each time you restart it or remove and reinsert the SIM.
   • My SIM is locked, so what do I do? The only thing that will unlock your SIM is the PUK key. Don't try to guess the PUK, as entering it incorrectly too many times will permanently lock the SIM—if this happens, you'll have to replace the SIM entirely.
   • What if I can't get my PUK or it doesn't work? Get a new SIM from your provider. The worst thing that can happen is that you lose access to your SIM card completely—as long as you have a removable SIM, your mobile provider should be able to issue you a new one.

5. gadgetmates.com › sim-card-blockedSim Card Blocked: How To Unlock & Regain Access

   gadgetmates.com › sim-card-blocked

   • Cached

   Dec 15, 2020 · When your SIM card is blocked, you’re cut off from your mobile services. But don’t worry, with a few specific steps, you can unlock your SIM card, retrieve your PUK code, and prevent future locks.

6. helpdeskgeek.com › help-desk › 12-things-to-try-when12 Things to Try When Your Sim Card Is Not Working

   helpdeskgeek.com › help-desk › 12-things-to-try-when

   • Cached

   Mar 20, 2022 · 1. Remove the SIM Card and Reinsert It. 2. Clean the SIM Card and SIM Card Tray. 3. Reboot Your Device. 4. Update Your Device. 5. Turn Airplane Mode On/Off. 6. Try a Different Device. 7. Contact Tech Support. 8. Is the SIM Card Active? Advanced Troubleshooting. 9. Reset Network Settings. 10. Update Carrier Settings. 11. Factory Reset. 12.

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7. www.wikihow.com › Unlock-a-SIMHow to Unlock a SIM: 5 Steps (with Pictures) - wikiHow

   www.wikihow.com › Unlock-a-SIM

   • Cached

   Mar 28, 2024 · If you locked your SIM card, you will be prompted to enter the password when you insert that SIM into a new phone. If you know the password, enter it to unlock your SIM. If not, you can unlock the SIM with a PUK (pin unlock key) that comes from your mobile provider.

   • 2. Get the PUK for your SIM. This code comes from your mobile provider, so you'll need to contact them directly. Your provider may ask for the numb...
   • 3. Enter the PUK when prompted. The PUK is typically 8-digits long. Be careful when entering this code—if you are unable to enter the correct PUK a...
   • 4. Create a new PIN. Even if you want to disable the PIN, you'll need to create a new one before you can disable SIM locking. This time, write down...
   • 5. Disable SIM locking (optional). If you don't want to use a SIM PIN in the future, here's how you can disable SIM lock: iPhone: In the Settings a...

8. www.ifixit.com › iPhone › Invalid+or+No+SIMiPhone Invalid or No SIM - iFixit Troubleshooting

   www.ifixit.com › iPhone › Invalid+or+No+SIM

   • Cached

   Sep 11, 2024 · If it works, replace your SIM card. You can request one from your service provider, or visit one of their physical locations. As a workaround, use your phone’s eSIM instead.

9. appletoolbox.com › sim-pin-heres-what-to-do-ifSIM PIN? Here’s What to Do If You’re Locked Out of Your SIM Card

   appletoolbox.com › sim-pin-heres-what-to-do-if

   Jan 31, 2019 · If you input the wrong SIM PIN three times, your SIM card will be locked — cutting off access to voice and data. Stop inputting anything if you can’t remember your SIM PIN after a few tries. If you happen to fail 10 further input attempts, your SIM Card will be locked permanently.