Cant connect to wifi network. Did all steps accordingly. Done reset. Also done upgraded to ios 8.2. Problem still exist. What shoul i do. Please help. (Iphone 5s/ios 8.2)

first start here

http://www.apple.com/support/iphone/wifi/

If that doesn't help then

Restore as new, if wifi works add your backup and proceed .If after backup issue returns

Then you have a corrupt backup

If when restored as new no wifi then you probably have hardware issue and should take it to an Apple Store genius bar

Please try this steps.

1. Turn on airplane mode.

2. Turn off airplane mode

3. Connect to wifi

Tried that as well resets no fix