A bit too general so I could recommend a solution right away.
Nevertheless I suppose
www.nocreditcard.com or
www.allopass.com should have global micropayment solutions that are also used in mainstream shopping. Whether it to bee an SMS or a premium call, that could give you a better idea.
Of course the payouts are terrible though. As one of my mates mentioned - premium calls and sms would be an ultimate no.1 global payment method if the carriers wouldn't fuck everyone in the ass.