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
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.😡
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.😡
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.😡