Why are incoming sms being blocked?

[Shaheen Mia]

sms incoming is blocked .why?

my phone (Walton primo r-1). for some days my phone is not getting any incoming text messages. any setting is changed i do not know. how can resolve

 

[Golfdriver97]

Re: sms incoming is blocked .why?

Welcome to the forums. It might be a SIM card error. See if your carrier can give you a new one.