Apple is examining a bug in the iPhone 6S that can root it to show the incorrect quantity of battery life while you're travelling – however there is a fix for anybody who runs into the difficulty. The mistake happens when the cell phone switches time zones mechanically, or when you alter the time on the gadget yourself. Several users are finding the battery percentage is not updating, although the charge is dipping.
To fix the subject, the Apple Support page proposes you restart your iPhone, and once it has booted up exit into Settings > General > Date and Time and confirm 'Set Automatically' is put to On.
If the trouble perseveres even when you're not altering time zones, the suggestion is to contact Apple support. Apple declares it's conscious of the matter and is discoveing ways to fix it – we'd expect for a fasten to approach in iOS 9.2.1, though we're not certain yet when we'll observe that.
It's not the main matter for the enormous bulk of iPhone users, however it could be chiefly annoying if you journey a lot.