Thailand Mobile Phone Tourist NANO SIM. 7 Days Unlimited 3G Internet. Prepaid. Credit preloaded. Works on arrival. 33 Minutes call time to US and Canada using 004 + 1 + area code + phone number 7 days of unlimited 3G, 100 Baht of calling credit Give your Thai phone number to friends and family before you go Nano SIM works in iPhone 5 and up Free incoming calls and SMS, after 7 days, add credit for continued 3G usage