Best answer by Kash
If you are looking to use roaming in Dubai and Thailand we would advise that you check the link for charges HERE.
Whilst in Dubai it may be best to connect to the Du network, whereas in Thailand it may be best to connect to True Move, DTAC or AWN.
Dubai may show as United Arab Emirates on the list of countries but let us know if you require any assistance with this.
You may also want to check out our community post HERE for setting up for your phone for a trip abroad.