24-02-2019 08:13 - edited 24-02-2019 08:19
You can use O2 Travel for Thailand and Bali
It will cost you £4.99 a day for 120 mins 120 texts and data
To get O2 travel Text O2TRAVEL to 23336.
Best advice is to use Wifi wherever you are. Turn voicemail off before you leave.
If your phone is unlocked you may be better using a local sim
Best of luck and welcome to the forum
Edited to add: I have just noticed you have posted in the PAYG section. If you are PAYG then you wont be eligible for O2 Travel. You will be paying standard international rates which are extortionate.
You would be better off changing to a 30 day sim only contract. You would be eligible for O2 Travel then
on 24-02-2019 10:18
@garsingtonmatt get a local SIM when you arrive in Thailand as O2 does not have a good reputation for data speed over there.
Get phone unlocked first if necessary https://community.o2.co.uk/t5/How-to-Guides/Unlocking-an-O2-phone-to-use-a-different-SIM-card/ba-p/1...
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)