A note in case there are other users with the same combination of phone and watch as me - Huawei P30 Pro and Galaxy Watch 4 or 5 - to help you get them working OK together. I expect the technique will work for other Huawei phones up to the P30.
The Huawei P series is notorious for issues with bluetooth and by default you can't pair a Galaxy Watch 4 or 5 with it using the Samsung Galaxy Wearables app. Not only that, but even once you do pair it, if you don't mess with battery settings, the Locus Watch app gets disconnected as soon as you close the Locus screen on the phone. Here's the process that worked for me...
1. On the phone, load Wear OS by Google, Locus Map, Locus Map Watch, Samsung Health, Samsung Galaxy Wearable, Samsung Galaxy Watch (for Watch4) or Galaxy Watch 5 (for Watch5).
2. On the phone under Settings, Battery, App launch, disable "Manage all automatically" for Galaxy Wearable, Locus Map, Wear for Locus Map, Wear OS by Google. I didn't disable Wear for Locus App initially, and this was enough to cause disconnections.
3. On the watch, start it up, or if you are changing the watch to a new phone go into Settings, Connections and Connect to new phone. You will be prompted to go to your phone to continue the install.
4. On the phone go into Samsung Health (not the Galaxy Wearables app - as that won't see your watch), Menu, Settings, Accessories. The Galaxy Watch should now show up, and you can connect it there. It's a bit of a slow process, but the watch should connect OK. I did have some issues with copying my Google account onto the Watch5, but got there in the end after several attempts. It was fine with my original Watch4.
5. Back on the watch, go into the Play Store app, go to Apps on Phone, and load Locus Map Watch.
That should be it! You can now manage the watch with the Galaxy Wearables app.
The Huawei P series is notorious for issues with bluetooth and by default you can't pair a Galaxy Watch 4 or 5 with it using the Samsung Galaxy Wearables app. Not only that, but even once you do pair it, if you don't mess with battery settings, the Locus Watch app gets disconnected as soon as you close the Locus screen on the phone. Here's the process that worked for me...
1. On the phone, load Wear OS by Google, Locus Map, Locus Map Watch, Samsung Health, Samsung Galaxy Wearable, Samsung Galaxy Watch (for Watch4) or Galaxy Watch 5 (for Watch5).
2. On the phone under Settings, Battery, App launch, disable "Manage all automatically" for Galaxy Wearable, Locus Map, Wear for Locus Map, Wear OS by Google. I didn't disable Wear for Locus App initially, and this was enough to cause disconnections.
3. On the watch, start it up, or if you are changing the watch to a new phone go into Settings, Connections and Connect to new phone. You will be prompted to go to your phone to continue the install.
4. On the phone go into Samsung Health (not the Galaxy Wearables app - as that won't see your watch), Menu, Settings, Accessories. The Galaxy Watch should now show up, and you can connect it there. It's a bit of a slow process, but the watch should connect OK. I did have some issues with copying my Google account onto the Watch5, but got there in the end after several attempts. It was fine with my original Watch4.
5. Back on the watch, go into the Play Store app, go to Apps on Phone, and load Locus Map Watch.
That should be it! You can now manage the watch with the Galaxy Wearables app.