A reader purchased a b-mobile USIM 300 but has been unable to get it working on his rooted and unlocked US T-Mobile G1. He is currently discussing the problem with the b-mobile help desk, and the support ticket is still open. According to the reader, b-mobile has been very receptive to his problems, and until this case is resolved, we won't know for sure if the SIM is truly unusable on v 1.6 a. However, in case any other readers are thinking about purchasing this product, I felt it was important to post this information. I mean, who is still running cupcake?
The supported handset page for b-mobile does not list the G1 or Hero. Both the Google developer phone and the Docomo HT-03a (HTC Magic) are listed as supported but only if they are running Android v 1.5 (cupcake). When I read this after the product went on sale, I assumed it simply meant that the SIM had only be tested on cupcake, but now I am not so sure since our reader has confirmed that his phone is unlocked and has the correct APN settings.
Here are some excerpts from b-mobile support emails. If any readers have advice or thoughts on why the SIM would work with 1.5 but not 1.6, please leave a comment.
Our reader who is having the problem wrote the following:
Under the "Network Operators" menu on my phone, NTT DoCoMo and SoftBank are found, however if I try and connect to either of them it displays the error message "Your SIM card does not allow a connection to this network."The response was to downgrade to v 1.5, which would of course void any warranty on the phone (APN details removed):
Thank you for contacting the b-mobile Helpdesk again
Please confirm again that you are using the X.X.X APN.
To check the APN network connection you are using
1. Press HOME MENU
2. Touch Settings.
3. Touch Wireless Controls> Mobile networks >
Network operators or Access Point Names.
If you can not connect that we think this problem concern with Android Ver1.6. Please inform what Android software version and base band firmware version.
Our product is fully compatible with Android version 1.5. If you have Android version 1.6 then Please downgrade 1.5 for use.
If you have any further questions, please do not hesitate to contact us here at the b-mobile Helpdesk.
We thank you for your continued support of b-mobile.