^is it connecting at all?? speedtest pls on mobile , also dig around settings and check if router encapsulation is in PPPOE for mobile device support
try using 3rd party software.
In BSNL its 1492, try: Max MTU: How do I find mine? Tweaking FAQ | DSLReports.com, ISP InformationI fixed it by changing the MTU value back to default '0'.I can upload properly from the android now.
But isn't 1500 the optimal value ?