Hi, I had never experienced this problem until recently because I have always been connected to wifi and never used 3g for long periods of time. However, I was out of town this weekend, and had to use 3g since there was no wifi. The problem is that, I would be using the 3g and checking emails, and surfing the internet, then the internet would just stop working even though it shows that I still have 3g connection. So i restarted my iphone, then the internet worked again for 5 minutes, then it went out again. I had asked my friend who also has an iphone whether they had access to the internet through 3g, and they did, but I still didn't. So the I left my phone alone for a couple minutes, then tried to use the internet, and it would just go in and out. Is this a problem? or is there an explanation for it?