Hi @stefwe,
I've updated my LG Watch (dory) with the latest nightly build and the connection to my Sony Xperia X is stable.
If my phone is out of the bluetooth range the watch disconnects and automatically reconnects if the bluetooth distance is in the allowed range.

10 days ago, I've used the steps given on https://wiki.ubuntuusers.de/Howto/Installation_Ubuntu_Touch_auf_MEIZU_PRO_5 to install Ubuntu Touch 16.04 on my newly bought second hand Meizu Pro 5 and after installation my partitians are:

Number Start End Size File system Name Flags
1 5243kB 1049kB private msftdata
2 5243kB 5505kB 262kB proinfo msftdata
3 5505kB 5767kB 262kB misc msftdata
21 8389kB 12,6MB 4194kB param msftdata
22 12,6MB 21,0MB 8389kB ext4 efs msftdata
23 21,0MB 23,1MB 2097kB pnv msftdata
24 23,1MB 27,3MB 4194kB ldfw msftdata
25 27,3MB 31,5MB 4194kB dtb msftdata
26 31,5MB 56,6MB 25,2MB bootimg msftdata
27 56,6MB 90,2MB 33,6MB recovery msftdata
28 90,2MB 124MB 33,6MB bootlogo msftdata
29 124MB 145MB 21,0MB rstinfo msftdata
30 145MB 166MB 21,0MB ext4 mnv msftdata
31 166MB 187MB 21,0MB reserved1 msftdata
32 187MB 208MB 21,0MB reserved2 msftdata
33 208MB 229MB 21,0MB reserved3 msftdata
41 268MB 6711MB 6442MB ext4 system msftdata
42 6711MB 7248MB 537MB ext4 custom msftdata
43 7248MB 9395MB 2148MB ext4 cache msftdata
44 9395MB 62,5GB 53,1GB ext4 userdata msftdata