Maybe I am a bit behind on this one, but I thought mobile numbers were 8 digits long. I keep getting 9 digit long numbers originating with +852. Keep missing them but when I call back I either get an obvious mobile voicemail in Chinese or the guy picks up and simply says '
wái'!
Been going on for a few days different 9 digit numbers that look like this 932xxxxx7 and a few more. So do 9 digit mobile numbers exist (it seems something certainly does anyway!). Calls getting annoying, too many to block. All very odd.