If you are visiting non-city area of Thailand, make sure you have check the telco coverage before you visit, because some of the area may not have 4G or 3G internet connections, because they just cover 80% of the Thailand.
If you are visiting non-city area of Thailand, make sure you have check the telco coverage before you visit, because some of the area may not have 4G or 3G internet connections, because they just cover 80% of the Thailand.