How to Fix Wi-Fi Problems in iPhone 4 If you have a trouble with your iPhone 4 with W-iFi, then instead of getting panic about the solution just take the systematic approach to fix it.
Disable Airplane Mode:
Go to Settings >
Airplane Aviation mode > Turn it off. When it is turned on, this setting can mess with your Wi-Fi connections.
Reset Network Settings:
(Settings > General > Reset > Reset Network Settings) This resets all saved Wi-Fi networks, Bluetooth pairings, and VPN settings to a fresh slate for network configurations.
Reboot Your Device:
Most of the times a simple restart can solve provisional errors. Press the power button until you get the ” slide to power off” option, slide to turn off your iPhone. Give it a few seconds and then turn it back on.
Edit: Dismantled and then forgotten from wi-fi network:
Then, try to forget the problem Wi-Fi network. Settings > Wi-Fi, tap on the network name and tap Forget This Network. If you forget this, go back to the same network and choose it followed by re-entering the password.
Check Router Settings:
Make sure your router is working and that your iPhone can connect to it. Unplug your router for 30 seconds and plug it back in to restart it.
Update iOS Software:
Updating your device can eliminate issues that cause a poor connection.iPhoneWiFiFix (ad) For updates, that will be Settings → General → Software Update.
Contact Support if Needed:
If nothing works, i would suggest contact Apple Support or visit nearest Apple Store.
These steps should allow mobile hotspot troubleshooting for iPhone 4 to get you connected again, with any luck.