I have two iPhone4 phones, one with iOS4.2 and the other with iOS5.1
I was able to update both phones to iOS6 and am experiencing issues with the prior iOS4.2 device. Namely the inability to maintain the auto-join for my home WiFi.
I can manually connect each time (and have to provide my long password), but as soon as the divice sits for a while or goes into sleep mode, the iOS4.2 device disconnects.
The only difference I can see between both devices (bought at same time) was that my wife's phone (iOS4.2) was not upgraded to iOS5 (she did not wish to at the time).
I also have two iPads that can easily auto-connect to my home WiFi while using the new iOS6.
I am very frustrated since my wife's phone does not have unlimited data and my phone does. I have tried a miriad of suggestions offered through different forum threads (renew lease, reset connections, change router settings), and not a single one resolves the issue.
Does anyone else share my problem (multiple devices, no auto join on one)?
Extremely frustrated!!