What is the differences between blackberry storm 9520 and blackberry storm 9550?

BlackBerry Storm 2 9550 is the second generation of BlackBerry smart phone having touch-sensitive screen. Let’s see what are different about this “storm” compare to BlackBerry 9530. Built-in 3.2MP camera with 2X zoom, auto-focus, Image Stabilization, Video Recorder… Same large vivid screen with the same resolution (360 x 480px) Same 1400 mAh battery allows same talking time (5.5 hours) but shorter standby time Built-in 2.1 Bluetooth, GPS through VZ Navigator and BlackBerry Map Verizon BlackBerry Storm 2 9550 has internal memory of up to 2.3 GB and may accept memory card supporting up to 32GB Another added-in comparing to Storm 9530 is that Storm 2 9550 can access Wi-Fi (802.11 b/g) This Verizon BlackBerry smart phone also has media player, BlackBerry Desktop Manager and BlackBerry Media Sync for easily syncing and enjoying music from iTunes and Windows Media Player www.phonegg.com/compare/26/BlackBerry-… http://www.dotcells.com/blog/verizon-blackberry-storm-9530-vs-storm-2-9550-compare-review/ check in these