Wifi speed very slow

[SumitKundra]

Hi.. i m having 150 mbps airtel broadband ... in my m51 phone getting  speed very slow..in other phone more than 200 mbps...please fix the error..really fedup with samsung services

[Smishraa]

Turn Bluetooth off, then check

[BrajBliss]

Same issue, when bluetooth off it works fine. But why the **bleep** is that?