Moved over to the One plan last month and just realised that Three dont use up your text allowance for MMS messages (like O2 do) but charge you 25p per message.

Anyway, whats the best app on Android to use to overcome this hurdle.

This was a slight issue for me until I realised that it's just as easy to e-mail them since anyone I'd send them to has a smartphone with e-mail on it. It seems to be a lot quicker as well, although maybe that's down to the strength of the network compared to my previous provider.

whatsapp/viber/email/gmail