Thread network question

I realized that two of my IKEA “GRILLPLATS” plugs are not on same Thread network as other Matter devices.

Other devices has ended up on “Homey Pro” network whilst the two “GRILLPLATS” are on “Google-2B8F”.

I’ve tried many times to remove these and re-add both via QR-code and PIN but these two always end up on Google network…

So my question: Does this matter (no pun intended! :wink: ) in any way?

I’m guessing that at some point you added a Thread device to the Google Thread Border Router using your Android smartphone, and that it’s now set as the default border router on your smartphone. Or you used different smartphones.


(Source)

OK, thanks, that might be the reason even though I never installed any Matter devices earlier.

Strange that some devices are installed on Homey but few seems to prefer Googles Thread.

Are any downsides of having devices on two Thread networks simultaniosly?
Or do they “co-operate” via Threads protol regardless of network?

I’m just a beginner when it comes to Matter and Thread, but in my opinion, there shouldn’t be any issues with using multiple Thread networks, since the devices can communicate with each other via the Matter protocol.
Matter is the communication protocol.
Thread is the network environment.

It does cause issues if you have multiple thread networks. At least it did for me. Once I merged my two together (Apple Home and Aqara) things worked better

Also a beginner on Thread/Matter.

my understanding is that the Homey companion app uses whatever Thread credentials are on the Android phone. (according to ChatGPT searches). So this seems to point to using a different phone for that device? It is not clear (to me) if this thred credential is shared to your other Android devices. I do know that there is only the nuclear option of a phone reset to get rid of a stored one.

(I am still persuing an OTBR in docker with no other Border Router on the network for Homey-SHS. I will have to commission once using Home Assistant to get the credentials onto the phone)

I ran a Homey and Apple Home thread network in parallel for a few days, and it worked without any issues.

OK, Android phones locks on the first Thread border router you connect a device to > There’s not “something in there somehow” already..

To work around Android’s default TBR lock:

To reset Android’s first selected TBR lock:

This is a confirmed fix:

Ok, ty for feedback and ideas!

I’m gonna try with a fresh phone without Google Home and see what happens.

@DirkG would you like to read and maybe answer my questions in my post ?