I've tried sjphone but it seams that the wireless drivers are consuming all the cpu resourses (socket default drivers)... i can't ear what people are saying, but they can ear me, not clear... but understand.
I use this combination with voipbuster, without problems after some changes.
1st: in the options of SJPhone in stun tag change the refresh timeout to 600000
2nd: use the pocket hack master to oveclock the device to settings
CPU:520, BUS:260, RAM:65, LCD:65, T.
Of course it needs good connection. I use 2Mb/256Kb.
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