We've been helping a reader get his G1 working with B-Mobile, which was more difficult than expected, though B-Mobile's customer support was very helpful to our reader. (See here or the only post we made about this.) The G1 finally worked with the B-Mobile SIM after flashing an Android 2.1 ROM but would not connect with both Android 1.5 and 1.6. However, a commenter says that his HTC Hero is working with 1.5.
Based on chatter around Japan, it seems that there is indeed some issue with HTC's radio and Android 1.6 that is preventing it from working.
The reader with the G1 only tried one 1.5 ROM, which was dumped from the Japanese version of the Google Developer Day (GDD) phone, aka the ION (same hardware as the ht-03a). We figured, since B-Mobile officially supports the ION, and since they had been selling SIMs for the ION prior to announcing the USIM 300, that this ROM would work on the G1.
Here are two three things to watch out for:
- Not being able to access the application Market - may need market enabler.
- No 3G icon indicating that you are indeed connected
- An error message saying "Your SIM card does not allow a connection to this network"
As for the 3G icon, I am guessing this is also due to not being registered on Docomo's network. Further guessing leads me to believe that this is due to the presumed IMEI filtering done by Docomo that prevents non-branded handsets from being used for data. As far as I can tell, the only handsets that B-Mobile officially supports are ones that were originally sold by Docomo or Wilcom, an MVNO like B-Mobile that uses Docomo's network. Aside from the ION of course.
Due to the lack of the 3G icon, our reader's G1 actually connected just fine with the B-Mobile SIM, but he didn't know it until customer support sent him an email:
Your b-bmobile SIM successfully connected on April 22. The last connection it made at 15:20 on April 24.This is the time when he had the 2.1 based ROM installed. After April 24, he decided to flash the 1.5 ROM since he thought the phone wasn't connecting due to the lack of the 3G icon.
Here are the details for the G1:
- HBOOT-1.33.2005 (DREA1000)
- Open Eclair v1.2.1