Chosen Solution
I have the same problem. When placing a call it says no sim or sim error but data works, help please.
The problem usually has to do with the copper connectors on the sim card getting dirty. To fix it just follow the steps. 1 Pop out the sim card by putting a small paperclip or pin into the tiny hole on the side of your Phone. Push hard so it pops out.2 Take the card out of the little tray. Remember how it looks when it was in so you can put back correctly.3 Put some rubbing alcohol on the end of a Q-Tip.4 Rub the copper side of the sim card thoroughly. Wait a minute to let it dry.5 Stick the card back in the slot.6 Problem should be solved.
Try to reset network settings by going to your phone setting then open backup md reset nd reset network setting it will help you a lot
