battery percentage jumps to 100 percent while charging and drops to "real" percentage when unplugged
Hello,
i was charging my new iphone 6s and i noticed that evertime i plugged my iphone into my macbook pro, the battery percentage jumps to 100 percent. Then, when i unplug it, it jumps back down to the "real" percentage. im currently draining the battery to do a recalibration to see if it fixes the problem. Any ideas on why this could be happening would be greatly appreciated.
thank you.
iPhone 6s, iOS 9.1, great phone