I plan to travel to Thailand during my holiday. How to use Thailand Happy Card?

After entering Thailand (after the plane landed), change your mobile phone to a HAPPY7-day card, and then wait for the SMS from the operator. It will be received in about 1 minute, and then it can be used normally, which is very convenient. The telephone number is attached to the package, and the 10 position above the barcode on the sticker in the upper right corner is the card number. If you don't post your phone number, please press * 102*9# and dial key in Thailand, and your phone number will be displayed automatically (don't be curious to insert the card before you arrive in Thailand). Call 1678 Chinese service from 9 am to 8 pm. I hope I can help the landlord