How do I update my iPhone 5s?
how to download iphone 5s upgraded software
[Re-Titled by Moderator]
iPhone 5, 10
Update to what?
10.3.4 is as far as that device can go. it is obsolete. it’s not even usable as a phone in most of the world any more.
Edit. sorry, the above is for a 5. The 5s can go to ios 12, but no further. it also is obsolete and no longer usable as a phone in most of the world now.
Most carriers require devices capable of VoLTE, which means an iPhone 6 or newer.