Solved Why Would My Phone Tell Me I Have No Sim Card WhenI Do?

[bizwiz2]

I have a Samsung Galaxy J3 Luna Pro modelSM-S327VL, Android 6.0.1.

I've been using my phone all day without problem. Then, all of a sudden, my phone tells me I have no SIM card.

I removed the back and the SIM card was there. I removed the battery and reinserted it. After that the phone works again.

Why did my phone do that?

 

[Volstein]

Sometimes it happens if the phone was shaken or something and SIM card replaces a little bit.
All you have to do is to place it right and everything will be fine.