My Iphone 4S 3G just stopped working, what do I do?

. When my 3G is on it says "searching", if I turn it off it works fine. I've never had a problem with my 3G and I keep it on all the time.

Take it to an authorized service center

Take it a repair shop it won't cost too much

It could be a trouble coming from your operator's network. Somedays if it is to windily, or if it's raining wireless signals can be weak and you can't access them. If there's none problem like that in your place and you've been suffering it for days by now ask to your operator for a solution.

Throw it away, get a real phone.