I am currently with O2 and on the Online Simplicity 20 Tariff which is a sim only tariff which costs me £20 pm and I get 600 free mins and unlimited texts. I have my own phone which is now beginning to get a bit beat up looking. Last week my daughter got herself a lovely Blackberry Curve 8520 but changed her contract from O2 to a different provider (T- Mobile I think). The Blackberry comes free and she's still only paying £20 per month for her contract AND I'm paying that just for the sim only! I am now thinking of upgrading to the Blackberry Curve 8520 but don't want to change from O2. Can anyone point me to the best deal or give me some advice? If I could still pay £20 per month and no more and stick with free texts and a good amount of free mins I'd be happy.