ip5s after install appear unable to verify update

francis_tay wrote:

i download the ios9.3. after finish download the iphone 5S cant install, but appear "you are no longer connected to the internet" why it happen like that but although already connect to the internet.

If you can't activate your iPhone, iPad, or iPod touch after installing iOS 9.3 - Apple Support

I've read in other threads that the software update has been removed from older model iphone such as the 5S due to the activation issue.

Here is the article from iMore explaining why Apple has pulled the update.

My iphone 5s installed iOS 9.3 without any problem, I encountered your problem when I was updating my wife's iPhone 4, so what I did I changed the internet services provider and I was successful updated