Hi there. Recently, I purchased an Iphone 5s from the US to use overseas. The iPhone is Cricket, and in the past I have bought Iphone 5 from Cricket and it was factory unlocked through Cricket without needing to do anything to them at all. SIM unlocked for international use - that is their OFFICIAL policy. I read online that the Iphone 5S were all unlocked for International use by default.. So my question is, Can I use the iPhone 5S overseas? Thanks.