The display setting only allows 15 or 30 second inactive sleep timer. Is there any way to set this to longer? Especially when it is charging and an app is running? I hate having to constantly tap the screen just to keep it from going to sleep....
Just to be sure we're on the same page, we are talking about a full factory reset? It would be a good idea to make sure to back all of your content before doing this but the reset might help with these settings.
You can do this by clicking on the Home key > Settings > Backup & Reset!
Factory data reset will return the phone to its factory default settings. Let us know if this works out!