The last two digits of the national bank model of Iphone5 are CH;

Telecom contract, bare metal:

Model ME039CH 16GB black

Model ME040CH 16GB white

Model ME04 1CH 32GB black

Model ME042CH 32GB white

Unicom contract machine, bare-metal model:

Model MD297CH 16GB black

Model MD298CH 16GB white

Model MD299CH 32GB black

Model MD300CH 32GB white

Model MD662CH 64GB Black

Model MD663CH 64GB white

Check the model to know which country the machine is sold in!

Telecom version of the contract or bare metal, can only use the telecom mobile phone card;

Unicom version of the contract machine or bare metal, you can use Unicom 2G, 3G, mobile 2G;

I hope I can help you!