3 ms·

Disproven multiple times.

• dep_b 9y ago
  I don't think there was an upgrade after iOS 7 that really made devices significantly slower. But a lot of people still have an iPhone 4 trauma. The 5S is like 5 years old and still runs iOS 11 very capably (unless you're one of the unlucky people with whatever type of iPhone for whom iOS 11 still is borked for some reason, still having trouble on one iPhone 6S Plus with that).