Why Does My Iphone 4s Battery Drain So Fast. Go to Settings - Battery and look at the list of apps in the Battery Usage section to see which apps are using the most battery life and identify apps that could be causing your iPhone to get hot. An app could be crashing in the background of your iPhone if its using a disproportionately high amount of battery.
In some cases the outdated app can create an issue. IPhone Speciality level out of ten. One of the biggest battery drains is screen brightness.
If its not a hardware issue below are a few things you can do to preserve battery life.
This is around 2000 cycles or so. Change a new and stable Wireless or cellular connection. IPhones battery draining fast. This is around 2000 cycles or so.
