Apple has revealed it’s begun investigating a bug in the new iPhone 6s and 6s Plus models that causes inaccurate battery percentages.

The issue’s been highlighted by Apple on its support pages – it says users may experience the bug when the time on their devices is changed to a new time zone, either manually, or automatically as they travel.

The result is the battery percentage number many iPhone users have next to the battery icon at the top of the screen won’t update, causing a user to assume they might have more battery life remaining than they actually do.

If you’ve experienced this issue, Apple outlines this fix:

  • Restart your iPhone.
  • Go to Settings > General > Date & Time and make sure that Set Automatically is turned on.

Apple notes that if the issue happens again and the user didn’t change the time or time zone on the device, they should contact Apple Support.

It follows this by noting they’re aware of the issue and are investigating the cause and a solution, which will quite possibly make an appearance in the forthcoming iOS 9.3 update.