My karbonn titanium machfive is 3g phone i can connect 3g in my home network but since i came to delhi under roaming i can connect only 2g i have another sim vodafone under delhi roaming i can connect vodafone 3g but not idea 3g.please help i already contacted idea guys they sent the settings i saved them but still not connected to 3g.this idea sim onnected to 3g with my friends phone.