Originally Posted by remichi
Sorry for the late reply guys. In the meantime I magically got Edge (E) connection without changing the modem. It is fine for apps as Whatsapp and Wechat but browsing is a nightmare.
I know my Chinese simcard allows 3G and 4G, so it must be the hardware or software of the phone that prevents me from getting 3G or H.
I will try flashing some different modems to see if it helps, I have first downloaded the original XXJVT modem so I can put that back in case I need to..
People advise to get China Unicom simcard instead of my current China Mobile. But the i9000 was sold in China so it should work here right, with the right modem?
Hey, not sure if you solved this, or still care. I'm only seeing this post now because I was thinking of resurrecting my SGS.
China Mobile uses a modified implementation of 3G, and likely 4G. You'll only connect to those networks if you bought a phone from China Mobile, or a secondhand one of theirs. I got this from a helpful China Telecom employee, who also told me that my LTE-enabled Nexus 7 (2013) wouldn't get LTE on the China Telecom network either; he told me to go to China Unicom!
So are you still using WeChat on your i9000? It's the only reason I'm looking into using it again. I have a Motorola Defy+ running CM7.2 (most stable/secure for it), and it hangs like crazy just opening WeChat.