Purchased from bsnl jaipur, the modem used to show signal strength (AT+CSQ^M) of 17-18/30 and speed being 110-160 kbytes/s. now in gandhi nagar near sec 10, signel strength is same but speed barely cross 40 kbytes/s. even changing username from *@aaand.in to *@aaa.in did nothing.so what could be the reason ?thanks