The lower end Asha 30X series has 32MB of RAM and 10MB of internal storage to play with. Squeezing a real browser with acceptable performance into that is probably non-trivial.
The second aspect is one of bandwidth. Pre-processed sites are a lot smaller than the full sites. Many people with these phones probably don't have data contracts with generous limits. And when you're paying pr byte and downloading over GPRS, every byte that doesn't have to be downloaded counts.
The second aspect is one of bandwidth. Pre-processed sites are a lot smaller than the full sites. Many people with these phones probably don't have data contracts with generous limits. And when you're paying pr byte and downloading over GPRS, every byte that doesn't have to be downloaded counts.