M31s Sim Issue

[M31s]

I bought samsung M31s 2 months back, but from 10 days it is giving me message at intervals that No Sim Card Inserted. All the networks go for some seconds and message disapper and after using some minutes it again appears. It dont let me join calls easily. please give me reasons and fix.

[Mitzzz999]

process of elimination, clean your original sim card... if still happening then ask your network for a replacement sim especially if its a old sim or a cut down sim. if it continues you can back up your data... hard reset phone, restore phone then see how you go... if problem still persists then you may need to go down the warranty route.