With Twii you can phone anywhere in the world, with no roaming costsEnjoy affordable calling rates to both mobiles and landlines. Easy to use user interface. 24/7 friendly support center. Earn FREE credits by inviting friends to sign-up for Twii. Subscribe to personalised number to select destinations. Receive incoming calls on your phone number from anywhere in the world. In-app transactions history log. Current destinations are: Zimbabwe. UK. USA. Canada. Australia and. South Africa. Ireland.