Apple. 4s model-A1387 16 gb
I am using last 16 Oct 201 8
My phone version is..... ios.9.3.5
Using family share iCloud.but right now can't connect to Apple I'd server
Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch
Try a forced restart.
If necessary
Do a backup and try a factory reset.