You can help yourself immensely, if you know which APPs work in Thailand and get them downloaded on your phone.
Here is a link to many of the Apps we recommended Thai Life 2 APPS
Weather Apps, Air Quality, AirAsia, Bangkok Metro, AirBnB, VPN, Tinder, Google Maps, Hostel World, Bolt, Grab, Line, Agoda and many more!
There is also a good Youtube video from “Friends from Thailand” that will steer you towards useful Apps for your time in Thailand.
Chock Dee!