Text 0158 to 81020 and reply the message with AGREE
More details please see HERE.

1) Dial the relevant Just Dial access number for the country you wish to call.
2) At the prompt dial your international destination number in full (including 00).
3) That's it, you're connected.

Remember: Please DO NOT press the "call button" again after dialling the international number.

Find out your access number and rates, click HERE for the country list.
Remember you can dial your destination number at any time during the prompt.

Free Mobile phones + 12 Months Free Line Rental

It's also simple and easy for landline users, just dial:

0844 720 0158 (24/7, all days) (1p per minute) or
0844 570 0158 (24/7, all days) (T-Mobile Flext Free)

At the prompt, dial your international number in full;

Enjoy your cheap international call at national rate!

*Check here to see if you can make free calls on T-Mobile