Why did an IOS upgrade improve my battery life?
The battery capacity on my Q iphone had dropped to 79 per cent, which provided power for five to six hours with typical usage. I had Apple fit a new battery, and the capacity went up to 100 per cent, as expected. However, I didn’t feel like I was getting any more life out of it. I vowed to return to the Apple Store to complain after my holiday. But, while away, I downloaded an IOS upgrade. Following this, the battery life improved substantially. Can you explain why the upgrade improved the battery’s life? Steve Sakal
A Not with absolute certainty. However, it is definitely the case that previous IOS updates have caused batteries to drain more quickly and that these problems have been subsequently fixed by later updates.
A couple of years ago, for example, the update to IOS 15.4 caused many users to suer rapid battery drain. Apple admitted to this and fixed the problem with 15.4.1, just a couple of weeks later (www.snipca.com/49909 – see screenshot).
Apple hasn’t made any specific mentions of battery-drain fixes with IOS 17 updates, but that doesn’t mean the company hasn’t quietly fixed something that was causing problems for a relatively small number of users (with the IOS 15.4 update the problem was so widespread that the company had little choice but to act quickly).
So, while there’s little doubt that your old battery’s capacity had deteriorated, it’s possible that a bug in IOS 17 was making it worse – a problem that Apple has now evidently fixed.