The iPhone 7 will have a slightly bigger battery than the iPhone 6S. That's even more impressive when you consider that the iPhone 7's body is said to be slimmer than the 6S's.
This news comes from a report on Chinese social network Weibo.
It says the iPhone 7 will boast a 1,735mAh battery, up from the 6S's 1,715mAh. The bigger iPhone 7 Plus is also said to get a battery boost, with a 2,810mAh model up from 2,750mAh in the 6S Plus.
The handset is expected to look very similar to the 6S, which would be a break from Apple tradition. Usually, the firm introduces a new look for every other iPhone, while the 'S' iterations get a minor spec boost while looking the same as their predecessors.
Apple is expected to drop the headphone port for the next iPhone, helping to make the handset slimmer. Though this has angered fans who will have to shell out for a new set of headphones.
As ever, take all this with a pinch of salt for now. We've got to wait until September to find out if this rumour is true.
Weibo, via 9to5Mac