Apologies if this has been asked/answered previously. I will be traveling to China (Shanghai) next month for a couple of days. I have an HTC Inspire 4G which I do not want to unlock and take with me (because I was told it is not compatible with China Mobile). What are my options for cell phones while traveling? Should I buy a "pay as you go" plan, or buy a throw away phone and then purchase a China Mobile SIM when I arrive, or????