Apple is now soon to release iOS 4.3.1 which is thought to fix some wifi issues and safari vulnerability issues like they did in safari 5.0.4. As normal .1 doesn't normally contain new features which makes no surprise when we see it only has bug fixes. This will now hopefully relieve people who have argued about apples release of iOS 4.3 as it has created a lot of WiFi issues. If you do experience issues here is the way i fixed mine:

  • Choose the Forget This Network option why tapping the arrow of your current internet connection.
  • Check if your IP Address begins with 169.xxx.x.xx if so restart your Router / Modem or your iDevice
  • If this still doesnt work then Reset all network settings by going to General > Reset > reset all network settings
If none of the above work then just search on google about it as all of these above worked for me. 
Now back to 4.3.1 as i said this should relieve people and i hope it stops your problems.

More updates as we get them. Please leave a comment below.