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My iphone is not working and says sim card invalid. Just happened - have had this phone for years

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I had a similar problem before. That was a problem of a sim-card. I visited my mobile operator to reissue a simcard. The same number, just the new Sim. Manager in the office said that simcard validity is 2-3 years, sometimes more.

Posted on Apr 24, 2017

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Invalid sim


Did you just recently update to iOS 7? Best bet is to do a full back up and then take it to an Apple store near you. If you don't have that option, sometimes just pulling the SIM and replacing it can fix the error. do this with it on first. If that doesn't work turn the phone off, remove the SIM, turn the phone on, insert the SIM. If that doesn't work you can try going into the settings and "Reset Network Settings" (not likely at this point)

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Invalid sim on unlocked 3gs


Some of the reasons why sim card getting not recognised in your mobile
1.Bad SIM -if it wasn't unlocked you'd get a message asking you to enter a PIN.Get the pin from an online vendor like http://www.classicunlocking.com/apple-iphone-3gs/rs17wp9/
2.With a warning that you have 10 attempts to enter the correct PIN code or it could be locked forever ,if you don't get that message it's "mostly likely" unlocked.BUT find a phone with a known working SIM and see if it will work and connect to the network.
3.May be a hardware problem try flashing with a custom rom.
4.This has to be a problem with the SIM card slot, which is soldered down to the logic board. It's possible that it's a mechanical problem , you might be able to open it up and discover that the card-detect switch is failing to detect SIM card insertion.
5.The os system has been updated (by jailbreaking) and your phone is not being recognized with the right settings , this happened after a update a year or two ago..

Feb 07, 2014 | Apple iPhone Smartphone

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Invalid sim


What is phone brand and model?If the phone displays invalid sim card in screen it is locked to network,you need to unlock it.After unlock it you can use with any GSM network sim card in the phone.Without unlocking if you use other network sim card in the phone it will display invalid sim on screen.To get unlock code for GSM network locked phones visit the site Theunlockspot.com for iphones you can get remote unlocking service in the same site itself and unlock easily.

Aug 12, 2013 | Cell Phones

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My go phone sim and a 3G sim and my phone is sayin dat the sim cards r invalid


Since you say it is a GO phone, you need to call ATT and they may help you with that.

Jul 24, 2013 | Cell Phones

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No Sim Card Installed Insert a valid Sim with no pin lock


No Sim Card Installed Insert a valid Sim with no pin lock

Sep 21, 2012 | Apple iPhone Smartphone

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it may be due to network lock, contact service provider if it locked , you can get unlock codes here http://www.theunlockspot.com/
you need to specify the country and network provider

Apr 13, 2010 | Apple iPhone Smartphone

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Hi can u help with my iphone 3g. it is stuck on invalid sim and emergency mode. how can i get this off? and is there a way to unlock a iphone 3g 3.1.3?


Here is what you have to do. Get a friend that is on the same carrier as the sim card that is in your phone.

Next take your sim card out and put a friends (same carrier) sim card in and restore it. When it is done it will still be in emergency mode. When it says invalid sim put your original one back in it and after about 30 seconds it will go back to normal.

This solution just fixed my iphone 3g so this should work.

Best of luck, Michael Proctor

Mar 30, 2010 | Apple iPhone 3G Black Smartphone

1 Answer

Updated iphone not working display only emergency


What You gotta do is...1. Google Blackra1n. 2. download it!! 3.open the blackra1n. 4. Click make it rain 5. wait for iphone to reboot. 6. Enjoy your re-hacked iphone.
Be sure to do this process with your Invalid sim card.
What happened?
When you updated your iphone the hack was un-done. Apple also has a software that senses when you are updating a hacked iphone. The software turns your iphone into a nice brick.
This should work!!!

Dec 28, 2009 | Apple iPhone Smartphone

5 Answers

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i put the sim card into iphone is dont work

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