Friend of mine just bought an iphone 4S from a co-worker.
Trying to check the health of the battery, mostly the number of battery cycles and the actual charge capacity vs the design capacity.
Thought the capability to check the battery was built into the unit but it doesn't seem to be.
Do I need to download an app to check that?
And will the app actually query the chip in the battery to get the true number of cycles and the current capacity?
What app do people recommend?
Trying to check the health of the battery, mostly the number of battery cycles and the actual charge capacity vs the design capacity.
Thought the capability to check the battery was built into the unit but it doesn't seem to be.
Do I need to download an app to check that?
And will the app actually query the chip in the battery to get the true number of cycles and the current capacity?
What app do people recommend?
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