How do I turn on 4G? For an iPhone 4S?
I'm not totally sure but i don't think the iPhone 4S has 4G only the iPhone 5 does.
Only if you have AT&T can you have 4G. That's why the others suck.
only the iphines 5 have 4g and you have to have it connected to a phone commpany
iPhone 4S does not get 4g speeds. iPhone 5 does.