I've had Vyke on my mobile for more than a year now. I first used it on Blackberry, now I have it on my Galaxy 2 phone. I just love how simple it is to use - if you make any international calls, they will all go via Vyke and you will be charged only their rates without anything 'extra'! Best to have a contract phone with free local minutes. The country I call is within what they call a 'Vyke Zone', with rates at 9p per hour to landlines I think, and 6p per minutes to mobiles, so if the calls to your mum cost you more than an hour, this is very good! I would recommend it to anyone who is tired of swapping sim cards or entering pin numbers and listening to options! You can just make this call on your way from work :)