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la321

macrumors member
Original poster
Aug 27, 2012
61
0
I no longer have my iPhone 4s. I have an iPhone SE now but I updated my 4s to 9.3.4 from iOS 6 to see how it would be. The phone is warm and slow. Is there a way to fix? I tried reset settings.
 

keysofanxiety

macrumors G3
Nov 23, 2011
9,539
25,302
I no longer have my iPhone 4s. I have an iPhone SE now but I updated my 4s to 9.3.4 from iOS 6 to see how it would be. The phone is warm and slow. Is there a way to fix? I tried reset settings.

Unfortunately not. The newer operating systems won't run that well on older hardware. They just don't have the beans to run it smoothly. The CPU will be maxed just to support the simplest animations, which is why it'll be getting a little toasty too.

iOS 7 killed my little iPhone 4. It was utterly unusable on that. If you've ever seen Wrath of Khan, I was in two minds whether to do a 'Spock's funeral' scenario for it. Unfortunately I didn't have an Enterprise or a newly terraformed Genesis planet to hand, so I did the next best thing and bought a 5S instead.
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
I no longer have my iPhone 4s. I have an iPhone SE now but I updated my 4s to 9.3.4 from iOS 6 to see how it would be. The phone is warm and slow. Is there a way to fix? I tried reset settings.
Sounds like probably some background work is going on since you went from iOS 6 to 9 which is a considerable jump, or potentially some process is stuck somewhere. I'd give it some more time, or alternatively, if that doesn't help, try to re-install (since you tried resetting all settings). The experience might be somewhat slower compared to iOS 6, but at the very least the phone shouldn't just be heating up randomly.
 
Last edited:

44267547

Cancelled
Jul 12, 2016
37,642
42,494
These older iPhones struggle with the newer updates, being they require more CPU/GPU Power and they greatly affect the battery consumption, maxing out the iPhone's power.

Doubtful the phone will improve. I'm not sure if you are able to downgrade the update.
 

Shirasaki

macrumors P6
May 16, 2015
16,263
11,764
These older iPhones struggle with the newer updates, being they require more CPU/GPU Power and they greatly affect the battery consumption, maxing out the iPhone's power.

Doubtful the phone will improve. I'm not sure if you are able to downgrade the update.
Downgrade is already unavailable for iPhone 4s
 

Saffy66

macrumors newbie
Sep 27, 2014
17
0
NSW, Australia
9.3.3 is the latest update available here, and I read it's the last one for the 4s. So if 9.3.4 is on your phone, it wasn't meant for it. My 4s started to get "laggy" around 8.4 so 8.4.1 is the last one I downloaded.
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
9.3.3 is the latest update available here, and I read it's the last one for the 4s. So if 9.3.4 is on your phone, it wasn't meant for it. My 4s started to get "laggy" around 8.4 so 8.4.1 is the last one I downloaded.
iOS 9.3.4 should be available for all devices that support iOS 9 (which includes iPhone 4s).
 

iRoRo

macrumors regular
Oct 29, 2013
107
1
UK
iOS 9.3.4 should be available for all devices that support iOS 9 (which includes iPhone 4s).
Hmm, one thing I did notice is, when I initially checked for an OTA update, there was no update available on my 4s but, on the second check there was an update. Perhaps doing as I did will get the update on the 4s.
 
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