No HSDPA on Vodacom and slow speed with Sony Ericsson K850i
This is less of a question, and more of a warning.
Like the majority of people with any computer sense, I loathe the Vodafone firmware on handsets issued by Vodacom.
And so I flashed my phone with the R1CA037 generic firmware for South Africa (by Davinciteam). This worked very well until recently when I became aware that I just cannot get HSDPA speed with my handset. No matter where, I would get about 350kbps download and 50kbps upload.
At exactly the same location, I used my simcard in a Novatel PC Card HSDPA modem and got 1800kbps.
This (together with all kinds of other troubleshooting tricks) I narrowed the problem down to my handset. And just for the record, neither SonyEricsson nor Vodacom had any ideas or suggestions for my problem.
So I paid 10 euro again, and flashed my phone back to the original Vodafone software R1CA029 and I planned to take it into some kind of customer care centre in order for Vodacom to have a look at my handset.
Turns out, taking the handset to them was not even necessary - after reverting back to the Vodafone firmware, the problem with my download speed just vanished.
I now get download of about 1900kbps and upload of 310kbps.
Moral of the story - flashing is OK, but obviously there is something in that Vodafone software that is the secret to accessing their HSDPA network.
And another thing - even if you are receiving HSDPA signal, the phone will ONLY show 3G. The 3+ or H symbols do NOT show in South Africa.