I have terrible battery life on my iPhone 6 running iOS 8.4.1. As you can see in the screenshot, it will die after 10 hours. Safari uses 55% of the battery, despite quite light usage. Safari will average 40% battery usage in the "Last 7 days" tab. Usage will always be 50%+ of what standby is. (Pardon the Swedish) Things I have tried that haven't worked so far: – Reset Safari – Turned off Safari reading list, and deleted everything in it – Changed iCloud passwords – Turned off location services & background refresh – Completely turned off iCloud on the phone for a few days, no change – Had the whole phone replaced (due to a clicking screen issue) once. – Full reset and restore from backup – Full reset without restoring from backup, set up as a new phone. I couldn't believe even this didn't solve it! The only thing that DOES work is if I manually close Safari in the multitasking view, and use Chrome instead. Chrome uses a fair amount of CPU as well but it gets me through the day. I've done this for a few months and don't like chrome so would like to go back to Safari. Any advice on what I could try next – I feel like I've literally tried everything!