My daughter has a jail broken Iphone 4 running 5.01
Every time the battery level drops to 30% the phone shuts down and will not restart until it is plugged into a power source.
I have tried hard reset and removing the latest apps without any success. Can any one suggest other options.
What would be the symptoms of a faulty or failing battery?
PS I also have a jail broken Iphone 4 which was bought at the same time and is running the same IOS
but this does not have the same issue.