MTT Telecom is one of the best South Korean MVNOs.
To Emphasise, The title of the offer is “ThankQ”.
You can easily use the offer with now your own mobiles.
ThankQ users can make worldwide free VOIP calls and the cheapest calls with Korean mobile users on their smartphones.
Not on using WiFi data service but on using 3G/4G data service, you could have the additional charge for using data.
As the conditions of now your own devices and mobile payable plans, you can not use the special offer, ThankQ.
You can purchase ThankQ payable offers on www.mtt.co.kr
Purchasing and applying ThankQ to Your mobiles can be followed with Korean local time 10:00 to 18:00.
Soho and SMB(small and medium) business users must purchase ThankQ offers by Mailing service, [email protected].