Wifi is working perfectly and no speed issue,but on Mobile Data i only get fixed speed 250kbps downloading,seems like Marshmalllw is blocking my device from going above 1m bandwidth. I toggle Airoplane mode frquently and sometime i works fine like 3 to 5mb dow loading speed. I did a factroy reset it worked fine,then after a day of using its having same issue. I removed Vpn but still same issue. I also checked my Data sim on another phone and it worked fine. So i am sure its a problem with the new update. Anyone having same issue? Or found any fix?