Apple hasn't precisely made us trust updating iPhone and iPad software immediately after a rollout in recent years. Past iOS upgrades have wreaked havoc with older iPhones and iPads. And then Tuesday, the launch of iOS 10 temporarily broke the devices of the users who downloaded it.

It's finally safe to upgrade your old iPhone or iPad to iOS 10.

Since then, Apple has announced that the early bugs have been squashed, and a lot have tried the software on all four of the older versions of iPhones that are compatible with it. Results have found that it only slows down key functions a bit, if at all. There was also no significant impact on battery life.

You are definitely going like iOS 10 since it can make you feel like you got a whole new phone without actually buying an iPhone 7. iOS 10 can organize your photos for you, include a lot of fun effects to Messages, and gives Apple Music a much-needed redesign. All iOS updates include important security fixes. It also works on gadgets dating back to the iPhone 5 and iPad Mini 2 and 4thgeneration iPad.

Apple says its own tests indicate that iOS 10 is just as fast as iOS 9 across supported devices. It also doesn't claim any changes in battery performance. One speed concern that is harder to quantify: The new Photos app, on more up newer devices, scans your collection of people's faces and sorts and organized it into "memories."

Users' iCloud Photos collection are usually very large, which can potentially have more than 100,000 shots. Sorting through them will take a very long time to do. To preserve battery life and not meddle with everyday use, iOS 10 only scans your photos when the device is plugged in and locked, like at night.