BlackBerry 8820

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MEMORY Card slot microSD
Internal 64 MB storage, 16 MB RAM
DATA GPRS Yes
EDGE Yes
WLAN Wi-Fi 802.11b/g
Bluetooth Yes, v2.0 with A2DP
USB Yes, miniUSB
CAMERA No
FEATURES OS BlackBerry OS
CPU 32-bit Intel XScale PXA272 312 MHz
Messaging SMS, MMS, Email, Instant Messaging
Browser WAP 2.0/xHTML, HTML
Radio No
GPS Yes
Java Yes
Colors Silver
BlackBerry maps
Media player
Organizer
Document viewer (Word, Excel, PowerPoint, PDF)
Voice dial
BATTERY Standard battery, Li-Ion 1400 mAh
Stand-by Up to 520 h
Talk time Up to 5 h
MISC SAR US 1.28 W/kg (head) 1.58 W/kg (body)
SAR EU 1.00 W/kg (head) 0.83 W/kg (body)
Price group

It has biilt in WiFi but it can't be used .. the blackberry chat can only connect through data by the cell network which is payed. The google talk also can't be used over the WiFi .. I even don't know why they put this wifi.