Anh da thu dung lenh 'menu-key' and 048263* chua !
Master Reset 18*0
Master Clear 18*1
Set band GSM 900 10*0*3
Set band DCS 1800 10*0*4
Set band PCS 1900 10*0*5
Set dual band GSM 900/1800 10*0*6
Read band 10*1*0 -> 3=GSM 4=DCS 5=PCS 6=GSM/DCS
Thu xem co chuyen bang tan duoc ko !