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.  SEE ALSO: Yeah, the iPhone 7 is boring, but who cares? I still love it. 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. Image: apple/screengrab Unless you really love your pho