[Samsung Galaxy S9  Questions & Answers] z0mb0lix:
Hey works -partially on Samsung S9 with lineageos 16.0.

3 attempts so far:

Hiding magisk with magiskhide from "galaxy wear" is mandatory with all attempts.

#1 - according to guide by To_O at 2018-10-31 4:10PM in this thread.

Method: edit ALL samsung/phone reference with magisk hide props editor to google/Pixel 3. "ro.vendor.product.manufacturer" not edited - no such entry. "Improved hiding" removed from magiskhide props editor since v5.

Hiding magisk with magiskhide from "galaxy wear" is mandatory.

Result: galaxy wear app was able to start. Additional plugins (Samsung accessory service, galaxy watch plugin) hat to be downloaded from apk mirror. Phone paired successfully.

BUT: after the next FULL reboot, the phone stuck in lock screen. Unlocking with pattern/fingerprint resulted in black screen an locked phone again. Restored via twrp recovery.

Comment: situation could be reproduced several times from clean rom install and twrp backups. Lockscreen loop starts as soon as any lockscreen (pin/pattern) is activated. No "problem" when lockscreens are disabled.

Assessment: likely interference with security features.

#2 - according to chrigi's blog (google it with "Samsung gear app s5")

Methods: edit only ro.product.brand and ro.product.manufacturer to "htc"

Result: galaxy wear app was able to start. Additional plugins (Samsung accessory service, galaxy watch plugin) hat to be downloaded from apk mirror. Phone paired successfully.

BUT: camera safes only blank grey pictures (already noticed by other users in chrigi's blog on other phones.

Comment: no further tryout performed. Not worth it.

#3 - mixture of #1 and #2

Method: edit only ro.product.brand and ro.product.manufacturer to "google".

Result: galaxy wear app was able to start. Additional plugins (Samsung accessory service, galaxy watch plugin) hat to be downloaded from apk mirror. Phone paired successfully. No camera app misbehavior in camera app and lock screen - so far. Several full reboot without any issue.

Comment: The result was created via "backwards" engineering. Started with #1 - installing galaxy wear app - started successfully - downloaded and installed additional apk - galaxy watch paired successfully - created system/data/boot backup in twrp - implemented lock screen pattern - full reboot (power off/wait/reboot) - lock screen loop - restored backup - edited props again - removed all edited entrys except "ro.product.brand" (google) and "ro.product.manufacturer" (google) - tryed galaxy wear app - still working - full reboot - still working - implemented lock screen pattern/fingerprint - still working - full reboot - still working.

(I rebooted another 27 times just because I was ecstatic that I managed to get this working... So far)

Current status: I haven't noticed any other strange behaviour SO FAR. Several phone features (calling, ...) haven't been used since the editing. App misbehavior from conflict of entrys in props is possible.

EDIT: If you experience increased battery drain after changing the props: wipe cache/dalvik.

Current personal status: still happy this is working since I successfully bricked my previous Ph-1 not 48h ago.

Stay tuned for "ups, I did it again" ;)