I used 3 diff ROMs namely;
1 ViperDNA rom
I have similar issues with all of them; I can access internet with firefox and opera, apart from this I can't install apps via 3G/HSDPA.
I can install apps via wifi and internet pass through. Apps installed are not working via 3G/HSDPA but my mails are dropping.
I have data bundle on my phone, access point is configured perfectly because I work in same Telecoms company(MTN Online).
I am based in Lagos, Nigeria.