My iphone 4 won't connect to my Wi-Fi? - 1

The icon goes back and forth between Wi-Fi and 3g this just started today. Yesterday the Wi-Fi worked just fine on my phone.

Also try Setting > General > Reset > Reset All Network Settings

is worth trying

If you know that the Wi-Fi is stable where you are attempting to connect, then you may have a hardware problem on the phone. Try a different Wi-Fi site and see if the problem persists. If it does, try a hard reboot. Shut the iphone off completely, Wait about 30 seconds to a minute and then power back up. If the Wi-Fi is now working correctly, then problem solved. If not, you need to talk to a phone technician.

Try to reset the router or repostion the router to make sure the Wi-Fi signal is good enough. If it still couldn't work, you can click this link about a few tips, http://www.mywifirouter.me/topic/six-useful-ways-help-to-solve-wifi-problems/

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