Provided we given the money
Going to any Apple store, we were given two options:
1) buy a new battery
2) buy a new phone
One way or another they wanted money. In the space of one update, my iPhone started to slow down. Call it what you want, if you're going to affect performance with specific updates, communicate that to the customers when they go to the Apple shop to ask for your help.And don't release updates that reduce the phone to a a dinosaur.