samsung r900

This is not a GSM phone, it will not work on any GSM network worldwide.
General     2G Network     CDMA 800 / 1900
3G Network     CDMA2000 1xEV-DO
      AWS 1700/2100
Announced     2010, September
Status     Available. Released 2010, September
Size     Dimensions     114.3 x 55.9 x 11.9 mm
Weight     106 g
Display     Type     AMOLED capacitive touchscreen, 16M colors
Size     480 x 800 pixels, 3.3 inches
     - QWERTY keyboard
Sound     Alert types     Vibration, MP3 ringtones
Loudspeaker     Yes
3.5mm jack     No
Memory     Phonebook     2000 entries, Photocall
Call records     Yes
Internal     165 MB
Card slot     microSD, up to 32GB, 2GB card included, buy memory
Data     GPRS     No
EDGE     No
3G     Rev. 0, up to 153.2 Kbps
WLAN     Wi-Fi 802.11 b/g
Bluetooth     Yes, v2.1 with A2DP
Infrared port     No
USB     Yes, microUSB v2.0
Camera     Primary     3.15 MP, 2048x1536 pixels, autofocus, dual-LED flash
Video     Yes
Secondary     No
Features     Messaging     SMS, MMS, Email, IM
Browser     WAP 2.0/xHTML, HTML
Radio     No
Games     Yes
Colors     Black
GPS     Yes, with A-GPS support; MetroNavigator
Java     No
     - MP3/WAV/eAAC+ player
- MP4/H.264 player
- Organizer
- Voice memo/dial
- Predictive text input
Battery           Standard battery, Li-Ion 1500 mAh
Stand-by     Up to 200 h
Talk time     Up to 6 h