... to maximum 2G TF card13. Data transmission: cable insert, card reader, Bluetooth function ,Bluetooth voice, Stereo Bluetooth music14. Image format ... 500groups,support group callingincoming ringtones, incoming images and video.16. SMS/MMS: 400+SIM1+SIM2 SMS,support MMS17. Power ... , memory expansion, E-book, incoming call firewall, dual card, dual standby and dual Bluetooth, display land ownership of ...