iPhone 4 cannot connect to home Wi-Fi

It sounds like you have a failing battery. Get it checked out and replaced.

My iPhone 4 stopped connecting to any WiFi. Your solution worked. Thanks much!

Yes, setting WiFi channel to 11 helped me too. All other suggestions failed to help.

Hey, thanks for the info, but my son's phone doesn't recognize any wifi network.

Rybackg what is dhcp?

its actually worked for me. thank you soo much 😉

I was having connecting issues when I updated to iOS 7, but this solved it for me: http://helpios7.com/fix-wifi-connection-issue-ios-7/

And you can download Airport Utility free from the app store, but do it on an ipad or macbook obviously if your iphone wont connect.

Thank you for re-posting! This 'fix' worked for me as well.

The same here. Thanks.

Sorry just realised I am in the wrong section My Wifi is fine but my Bluetooth is not

Dont ask me how, but I just turned my BT router off at the socket, and rebooted it.

the phone has now connected?

I too could not connect to my wi-fi. Usually restarting my iphone 4s works, but today it didn't. I took it outside of wi-fi range, just briefly & when I returned, it automatically connected.

This worked for me. Thanks!