I have a 4s as a test device that says otherwise
That definitely isn't true, the 4 is slower than 4s with iOS 7 and 8.
I have a 4s as a test device that says otherwise
That doesn't sound good. I did spoke with someone in a Dutch forum and he said that 8.3 is much quicker then 8.0>8.2 on a iPhone 4s. It would be a shame if 8.4 would be even slower then a iPhone 4 running iOS71.2
I will leave her iPhone 4s for now on iOS7.1.2
My colleague updated the system. As a result, his iPhone runs sllllllooooooowwwwwwwww. Latest version is compatible with new iPhone, not with iPhone 4s, iPhone 5, iPhone 5s.
I have a 4s as a test device that says otherwise
Try the music app
They are reprogramming the code. Speed optimizations will come with later betas. There's already a speed improvement from B2 -> B3.
My colleague updated the system. As a result, his iPhone runs sllllllooooooowwwwwwwww. Latest version is compatible with new iPhone, not with iPhone 4s, iPhone 5, iPhone 5s.
iPhone 4s is slow especially for 3rd party apps on iOS8.3 but this is definitely not the case with the 5s i have it running very smoothly.
I don't know if it is slow on iPhone 5/5c but what i read is that most people are also ok with 8.3 running on those devices.