I maintain that the iPhone 4S is still the finest piece of consumer electronics ever created. They really hit a home run with that one.
I've since moved to a big 6S, but my 4S is still quite usable.
I've since moved to a big 6S, but my 4S is still quite usable.
Previously, even if a developer was on his best behavior (putting expensive tasks on a background thread to avoid bogging down the main thread and causing a frame rate drop), it didn't really help, because you only had one hardware thread.
Even though the 4S is a "slow" processor compared to the latest phones, it's UI was way more usable than the 4 and 3GS because of the second processor core.