Expect iOS 11 Performance Issues
Expect iOS 11 beta problems to carry over into the final release.
Apple and its army of beta testers (us included) will squash tons of problems ahead of the official iOS 11 release in the fall. That said, problems always slip through the cracks into the final version.
When release day arrives you'll want to approach iOS 11 with caution. Many of you will come out of the installation unscathed, others will run into bugs and problems like battery drain, lag, and app compatibility issues. iOS software is never perfect.
It's also important to remember that iOS 11 will not support 32-bit apps which means hundreds of thousands of apps won't be compatible with Apple's new operating system.
Don't be surprised if some of your apps start acting up once you get the iOS 11 update on board your phone or tablet.