My phone sometimes comes up insert sim why is that?
There's a few things that can cause this. The case that is holding in the sim card is lose, the sim card itself is not all the way in it's case and connecting it to the phone or the sim reader on the phone is not working, or the sim card is bad. To check to see if the sim card is bad...put it in another cell phone that is also with your same network carrier...if it says the same thing "insert sim" you have a bad sim card and will need to go to your local carrier's store and get a new one or call your carriers customer service line. Hope it helps. Good luck
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