Invalid sim card

[AC Question]

My phone is turn on and it was working fine the day it got turn but the day after it saying invalid sim card but my phone on aND was working fine the other day what do I do oh and I got a galaxy grand prime

 

[StephanieWaugh41]

Your Sims card may have got zapped. Mine has done it twice and I got my Sims card replacement for free so call your carrier and tell them your Sims card isn't working and they will send you a new one and that should fix the problem or turn your phone off and take out your Sims card then put your Sims back in and turn your phone on and if it doesn't work then you defiantly need a new Sims card.