Blackberry 8520 O2 PAYG is one of the simplest of Smartphones. The handset embeds all the desires applications needed at work and fun. The simple to us mobile comes with full QWERTY keyboard that eases typing and gives quick connectivity to internet via GPRS and WLAN. Its primary camera of 2.0 MP helps you to capture photos of memorable moments and its music players give you pleasing sound to entertain you. BlackBerry Curve 8520 on O2 PAYG price is reasonable and comes with expandable memory card slot.