Hello everyone, iPhone 13 Pro user here. I bought this phone one month ago, replacing an iPhone 7, and I’ve surely been satisfied with its speed and power.
However, iOS 15.4 is not as good as iOS 15.3.1: my main concern is that suspended apps get killed far more often, whereas in 15.3.1 they stayed suspended for several hours. Please note that phone usage hasn’t varied after upgrading iOS: I’m doing the same things as before, but apps get killed far more quickly. I’ll give you an example: before going to sleep, I open Pokémon GO and play a bit, then just go to the phone’s home menu, lock it, and go to sleep; when I wake up in the morning, Pokémon GO restarts from loading screen instead of going straight back where I left it. Back on iOS 15.3.1 I’d find it suspended every morning. During the last month, there’s been days when it would never get killed and just stay suspended for 24+ hours long; now it’s quitting several times a day. Please note that Settings --> Battery doesn't show any app running over night, so it's not a matter of other apps eating into RAM (which could be the case during the day, although, as I said before, I'm using the phone in the exact same way as I did on 15.3.1).
Well, what to say now? I surely wasn’t expecting a 15.x update to bring a RAM issue on a freakin’ current gen iPhone model, let alone a Pro model. I’ve had only iPhones since 2009 and I’ve never experienced such a loss of performance in the first year of updates. Granted, it still performs really good and fast, but this issue is really annoying me.
Is there any hope a hypothetical iOS 15.4.1 can fix it? Is anyone else experiencing the same issue?
Oh, and speaking of new issues, audio playback from online radios suffers from occasional lagging, whereas on 15.3.1 it never happened. This is another 15.4-related problem I found.