iPhone 5 wifi ok only when cellular off

[stiwi]

I have been reading many posts regarding iPhone 5 wifi issues. I have upgraded to iOS 6.0.2 but it looks like my iPhone 5 works properly with wifi only when cellular data is switched off.

If the cellular data and wifi are both switched on, iPhone gets confusing, switching between 3G / WiFi, losing WiFi connection on screen lock, takes ages to reconnect etc.

The above mentioned behaviour is the reason of quick battery drain.
Anyone has similar issues?

PS. For troubleshooting I did network settings reset, forget wifi network and even entering wifi details manually. Using WPA2.

 

[Brian Y]

I have been reading many posts regarding iPhone 5 wifi issues. I have upgraded to iOS 6.0.2 but it looks like my iPhone 5 works properly with wifi only when cellular data is switched off.

If the cellular data and wifi are both switched on, iPhone gets confusing, switching between 3G / WiFi, losing WiFi connection on screen lock, takes ages to reconnect etc.

The above mentioned behaviour is the reason of quick battery drain.
Anyone has similar issues?

PS. For troubleshooting I did network settings reset, forget wifi network and even entering wifi details manually.

Losing wifi on the lock screen is fairly normal, and has been part of iOS since version 2 I believe - it's there to save battery life. Whenever it does any background operations such as checking for email, etc, it will connect to Wi-Fi automatically - that's nothing to worry about.

 

[stiwi]

Losing wifi on the lock screen is fairly normal, and has been part of iOS since version 2 I believe - it's there to save battery life. Whenever it does any background operations such as checking for email, etc, it will connect to Wi-Fi automatically - that's nothing to worry about.

I know it is the way it is supposed to behave. But the problem is it doesn't go back to WiFi once I unlock the screen. Or it will come back sometimes after 5 mins eventually but until then it is using 3G. When cellular data is switched off, WiFi works properly and comes back as soon as I press the home button which is not the case if both WiFi and cellular data are switched on.

 

[nightlong]

I always switch cellular off when there is wifi. After reading threads here of people ending up with huge cellular usage because they thought the phone automatically used wifi, I like to be sure it is not using cellular and especially LTE when I'm updating a lot of apps or streaming something.

And when my iPads only have cellular, I switch them to airplane mode when I'm not using them such as when I'm asleep ... Started doing that after reading threads here about huge usage overnight.

 

[stiwi]

Well, it is a solution but I can't see myself doing this forever manually. iPhone should keep the WiFi connection if available.