hi chachu
There are two type of Band in Any Mobi1e company likeGSM 900 or GSM
1800 and both have the difference Frequency
in GSM 900
Uplink Freq -890 to 915 MHZ
Downlink Freq- 935 to 960 MHZ
and in GSM 1800
Uplink Freq -1710 to 1785MHz
Downlink Freq- 1805 to 1880MHZ
i hope u ‘ll get yr Answer.
Regards,
Paresh Patel.