So apparently this happened about a week ago, and before that everything was fine. I was receiving texts fine and everything was normal, but I then found out that I haven't been recieving any of my friends or families texts and they havent received mine. I tried to restart my phone and delete all of my messages but it still hasn't worked. I also tried taking out the battery for 30 seconds and putting it back in. And tried taking out the sim card. This is my first samsung galaxy phone and I didnt switch this phone with an iphone. The people I text arent just iphone users, but ALL of the texts I received didn't go through from any type of phone. What do I do? I tried searching online for help but other peoples problems dont relate to mine. Please help me out if you can, and thank you in advance!