I just came back from abroad a couple of days ago and I can send text messages but not receive them from friends. I am with 3 network with my Samsung Galaxy S3 and have tried changing some settings and restarted and took out the SIM card for my phone, etc. I only then receive messages later once 3 helpline texted me then numerous texts came through after that one text. It happened again then again, my texts came through late. My texts take ages to come through, even hours. May someone tell me how to fix this problem so I can receive texts when they are actually sent by my friends?