Hi there

We will be in Thailand next week, then Vietnam the week after that and then in Penang a week later.

Can anyone please advise me which sim I need to get for my phone? Preferably one that will be ok to use in all three countries, if possible?? I will need data mostly.

Thanks in advance.

Wasima

MOVED to "Mobile devices"

IMHO, you are still probably better off buying a separate sim card in each of the countries you are traveling to.

I don't think there's any SIM that will allow you to get data at a reasonable rate in the 3 countries either.

If you buy a thai SIM, you'll be roaming in VN and MY and the prices per Mb are likely to be outrageous.

As for Thailand, I generally use a DTAC SIM, the cheapest one in the nearest 7-11 and I subscribe to one of their per-week or per-month data packages: https://www.dtac.co.th/en/prepaid/products/happy-unlimited-internet-package.html

You may want to consider the 1 week / 600 MB 79 bahts package (dial *104*883*9# to subscribe)

Don't know about you, but 600 megs is more than enough for a week for me.

There's a 99 bahts offer with 1 GB (dial *104*884*9#)

And much more, see link above.

Works fairly well in my experience.

Yes, one for each. Watch those data expense rates. Do NOT roam.

When I was temp in Thailand, I used AIS prepaid (use postpaid now)

In VN I simply talk to the people at the hotel, tell them my needs, and buy one from them

Never got a SIM in Malaysia.

Good luck.