Hi, I'm looking at getting a Nexus 4 on Straight Talk, but will be leaving to study abroad in Singapore for 6 months. I've done a little research and have found that Singtel, StarHub and MoblieOne (M1) are the three prepaid companies in Singapore. My question is, will my Nexus 4, purchased in the United States, work in Singapore with a sim card from one of these prepaid mobile companies? Additionally, if you happen to know, can someone tell me which prepaid company would be best for someone looking for unlimited call, text and data to the United States while also being use the phone when traveling outside of Singapore, i.e. travelling to Malaysia and Thailand on the weekends. Thanks for your help!