After weeks trying to figure out how to fix this issue, and trying EVERYTHING I could find on Google and YouTube, I finally tried a few things of my own and so far BOTH our iphones, ones a 4 the other 4s, have stayed connected to our wifi at home without dropping it once. Sometimes respringing your phone or shutdown and restart helps after doing above. It seems that once you're connected...your connected...
If I helped you, great, if not, I am only trying to help, and best of luck.
This worked for us. I thought I'd share it. I REALLY hope it helps you too. Cheers! :)
If it does help, and or you like the video, Please give me a thumbs up or a nice comment. I'm pretty new to this and would like to be encouraged to make more helpful vids....again, CHEERS!! PLEASE SHARE THIS WITH OTHER IT MAY HELP. THANKS ALL!! :)