My True Move Sim will expire in December.

 

It is here with me in the UK and I do not have roaming.

 

I will not be back to Thailand for a long time........

 

How can I extend its validity from outside Thailand?

TrueMove H – “Quick Add” Extend your validity for up to 365 days at a cost of 2 Baht per month

Press : * 934 * 30 # for 30 days extension. Cost 2 Baht

Press : * 934 * 90 # for 90 days extension. Cost 6 Baht

Press : * 934 * 180 # for 180 days extension. Cost 12 Baht

 

To activate roamiing: *112*1#

 

Unfortunately the above will probably not work outside Thailand if you do not have roaming.

 

You can try to call Truemove and ask them to activate roaming. If that doesn't work you can also use https://mobiletopup.com/ to put money on your card. Every topup is good for an extra month. 

I found this site

 

https://thaiprepaidcard.com/product/360-day-mobile-phone-validity/

 

has anyone any experience of using them?

Tried it and it crashed out when taking payment with a worrpress error..

 

Will try again during the week

Looks like payment has gone througth as just gort notification of 92.56 baht for the 180 day top up