About 3G Radios 1.3G radios work with GSM850/1900/WCDMA B2/B5 or GSM900/1800/WCDMA B1/B8; 2.3G Radio cost data flow, Usually 2.88M/H for continue talk and 0.06M/day standby mode for reference; 3.Radio Support Real PTT platform & Cost User ID Yearly Fee 4.3G Radio talk no distance limit, no Country limit, Talk worldwide freely 5.WIFI function helpful for replace Data Cost |