Why is my iphone 7 dying at 70%?
i won't even be using my phone and i'll try to turn it one and its dead and it could be any percent, like today it died at 70% and yesterday is died at 59%.
demariscal,
Is there any unusual battery activity?
Go to Settings > Battery and scroll down to BATTERY USAGE to see the apps that are consuming your battery. If any of the apps have unusually high usage they can be shut down (double tap the Home button, scroll left or right to find the app, then swipe up to shut it down).