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Phone Says Invalid Sim Card Android / 11 Proven Solutions To Fix Invalid Sim Card Error On Android. Check the sim tray power off your device and remove the sim card from your android device. The sim card came with the phone, the sim card is linked to your account, so this will get an inquiry made about the problem. If the problem is still not resolved, try putting the sim card in some other phone and see if it's working. When asked for a sim network unlock pin, type in the code your network carrier gave you. If you use a sim tray from a different model iphone, ipad, or from another phone manufacturer, it might not fit properly.

The invalid sim card or no sim error can be encountered anytime. There is a chance that dust built up on your phone, and it is creating a problem where the sim comes in contact with your device's internal circuit. If the sim card is out of position, blotted, or frayed, then your iphone cannot recognize it. Here are the steps you need to follow to activate the lock on the network. Please help me fix it administrator did your imei show also go to settings> about and check baseband then report what you see