Originally Posted by
sanjeet_deshwal First of all,
If 3G is available,then your phone will show either H+ or H instead of 3G.
Second
It isn't Lumia phones fault , you aren't able to access 3G only because it depends on your Network provider not on your phone.
It's better that you contact your network provider.
First of all for some networks it will show as 3g sometimes instead of H and H+.
Secondly OP already stated that his android phones show full 3g/H/H+ signal strength in the same locality which means it can't be the network providers fault.