The iPhone's battery indicator icon is a handy way to keep tabs on how much of a charge you have. The only problem is that, by default, it's not a very precise instrument — more like a visual estimate ...

The Low Power Mode setting on iPhone and iPad is a feature that helps conserve battery life and keep your device running longer.

As a formerly, frequently disorganised dingbat, I know the fear of a rapidly dwindling battery all too well. While it's easy enough these days to glance at your phone screen and see clearly just how ...