I got problem with my iphone 4s. I can't connect to my Wi-Fi?

I have already tried to restart it with and without itunes but still same problem.help please

Added (1). When i mean connect = I can't even make it on/off… After making an update!

Added (2). Settings > general > reset > Reset Network settings
doesn't work!

Was having the same problem and saw a post here it simply said:

settings > general > reset > Reset Network settings

It worked! Hope it's that easy for you!

Try turning it off and on first, if that doesn't work then you might need to take it to and apple store to get it fixed