When in a contract, can I get a different SIM while in another country?

I'm going to china in 15 days and I want an IPhone so I can take pictures and have data while I'm there. I'm staying for an entire month. Getting this IPhone (with either sprint or T-mobile) with put me in a 2 year contract. Will I be able to use my phone while I'm there with the new SIM card I'm buying in China. I heard that my phone will be locked while I'm out of the country or something.

If you're on a contract, your phone will be locked to the specific network. This is because you probably got the phone at a subsidized rate from the network and therefore must pay it back to them through dedicated usage.

In the UK you can get in unlocked in a month after purchase due to the law.

In the US you'll probably need to wait for the end of your contract

Roam Mobality is the best option for USA, if you are travelling from canada to America. In UK it will take time…

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