I installed the Carbon ROM (Thanks Team Carbon!!) and it is working great on my Hong Kong P705. I've also been reading the posts about the V10 and V20 basebands. My phone shows baseband=unknown. Do I need to be concerned? See attached screencaps.
(1) The phone/ROM works with my carrier, I can make/receive calls and 3G data works fine.
(2) I noticed that the phone cannot connect to certain Wifi access points.
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