Instinct on straight talk says "sorry device has been blocked from network use." When someone calls me it says "not accepting calls."After changing APN I was able to call out text and use web. I had called ST after it stopped working. They said turn it off and on. I did and I used the internet and made some calls. I tried to use it again sometime later and it happened again. Called they said turn it on and off again and to leave it on. I called my other phone while on the phone with them and it worked. Hung up with them after they credited me with a day and same thing wont make or take calls. The web is not working either. Someone help me. I'm stupid with this stuff.