Why does my Iphone 5s won't work?

Hey guys I have bought an Iphone 5s US version and I have checked here that US version has frequency 3 1800mhz supported via this apple website https://www.apple.com/...phone/LTE/ and I was sure that 4G should work because according to this site of wiki http://en.wikipedia.org/...E_networks Etisalat and DU is using Band 3 also with 1800mhz frequency but it doesn't f*****g work and I'm reall pissed off not only because of the internet conncection but also because I have bought the wrong Iphone which I thought according to those information provided by wiki and apple should be working fine.

You might be in a dead zone

It is time for a S5

Talk to your carrier about it. May be you've the wrong model and it was previously with a carrier and unlocked later for sale. You should've bought factory unlocked model.

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