Here's how to check if your finicky iPhone 6S battery needs to be replaced

If your iPhone 6S has been plagued with power issues, never fear: Apple is offering battery replacements for the faulty devices. 

The abrupt system shut-downs make it abundantly clear that something's not quite right, but when Apple addressed the issue and announced the global replacement program, it didn't provide an easy way to find out if your phone is affected.

Unless you really love your phone, it's probably extremely unlikely that you have its birthday marked on the calendar. Short of taking it all the way to the Apple Store and checking in there, Apple gives no easy way to know if your device is eligible for the replacement.  Read more...