Why does my unlocked phone say invalid SIM?

There are many reasons why a SIM card is invalid or cannot be detected by the mobile device. For example, your device is running a very old version of Android or iOS or has problematic apps. Lastly, your phone might not be network-unlocked, which is why it doesn’t work on other SIM card providers.

Why is my SIM card not working on my unlocked iPhone?

An iPhone usually says a SIM is not supported because your iPhone is locked to your carrier. This means you can’t insert a SIM card from a different carrier if you switch. To check if your iPhone is locked, open Settings and tap General -> About -> Carrier Lock. An unlocked iPhone will say No SIM Restrictions.

What to do if your iPhone says invalid SIM card?

1 Physically remove and reinsert the SIM card. Make sure the SIM card is not scratched or otherwise damaged. 2 Put your iPhone in Airplane Mode. When Airplane Mode is on the icon will turn orange. 3 Turn your phone off and on again. 4 Check for carrier updates. 5 Update your iOS software.

What happens when you put SIM card in iPhone 5?

If iPhone 5 comes from AT network and you insert Sprint carrier sim card and a message “iPhone has a simcard from a different network” or “incorrect simcard inserted” appears on LCD it means that the device is network blocked. However if the device has a signal and you can make calls or send text messages iPhone 5 is unlocked.

Do you need IMEI number to unlock iPhone 5?

It is officially unlocked on Apple servers, which means that even after updating the system or making a factory reset the device will stay unlocked. In order to unlock an iPhone 5 you need to provide the IMEI number, which can be found by dialing *#06#, or by checking in the iPhone settings.

How can I tell if my iPhone 5 is permanently unlocked?

The easiest way to check if iPhone 5 is permanently unlocked is by inserting a different simcard (from different networks).