unlocking the G1 without any software or hardware amends. Just the magic sim card clip on from simable. When restarted it said - no service. but then bars started to appear. obviously I didn’t get any data - though thats just a case of entering all the suitable operator details. On restarting with the t-mobile sim back in had to enter my google account password. I’m not sure what advantage this is - unless you can get one sim free from somewhere?