Why I am seeing gray wi fi signal?

[Runalika Roy]

I am using MTS MBlaze Ultra Wi Fi in my micromax A120 mobile. Earlier I used another dongle of the same service provider, which was okay with blue wi fi signal. But this time with new connection, I am having this problem. My google sync is perfect! Internet is running though, but slow. No Facebook and very slow browser connectivity. I have tried toggle between airplane mode, uninstall apps, clearing cache etc all regular solutions! Please help me.