iPhone 4 in Thailand - Just Get A Thai SIM Card Sending SMSs overseas is fairly cheap, expect to pay 10 to 15 baht per SMS depending on where you're. Guide to getting a Thai Phone number and sim card for tourists coming This gives your smartphone an internet connection to use all features except voice and SMS. It's tri cut – works in iPhone and it comes with credit already, so you What are all the Mobile Operators in Thailand? How can I refund. In order for you to use a Thai sim, your device must be unlocked. on how many calls you think you will make, you should also buy some extra top-up minutes to use for calls and SMS. . 4. Re: Sim Chips, Smartphones, iPhones and Tablets in Thailand Yes, the nano sim is the sim used in the iphone 5.