Galaxy Watch LTE duplicate messages

I found a process that resolved this issue on both my watch and my wife's watch.  We both have the Active 2 (but in different sizes).  I am a t-mobile fan but did find it frustrating that I was told several times that the receiving a duplicate notification for every text every time I switched from Bluetooth to cellular data was normal.  The process I will detail below fixed 2 issues for both my wife and I.  Hopefully it can help others.  We have S10e phones but I suspect this will work on any android phone.

First the problems:

1. Getting duplicate notification on the watch every time the watch connects to cellular network.

2. Both watches had a voicemail notification that could not be cleared.  (I was told that I would just need to ignore it)

Now the fix.  I have no idea if all of this is needed but I will describe the exact steps I took that fixed both issues.  I waited a week to ensure it really seemed fixed it on my watch and then did it with my wife's watch.  Both watches are fixed of these 2 issues.  It takes about 10-20 minutes assuming minimal call times.

1. Go to the Wear app on your phone.  Then choose "Mobile Networks".  The click the 3 dots and choose "Reset Mobile Networks" (your watch will reboot and will no longer have access to the t-mobile network.  You'll have to call T-mobile to restore network connectivity so do it when you have time to call t-mobile.)

2. Call t-mobile.  Ask to be connected to DIGITS support.  They will likely want to try other things but stick to the process.   Tell them you reset the network and you need to re-add it to your watch.  They will text you a code and you will follow the prompts to add a network in that same menu in the Wear app on the phone.  Once the watch is re-added to network it will reboot.

3. Now have them change your DIGITS plan to a regular phone plan.

4. The t-mobile employee will then need to call your WATCH number (not your cell number) and leave a voicemail.  Make sure they say at least a sentence as very short messages won't register.  You will get a notification on your watch that you have a voicemail.  Either click the link in the notification or dial 123 from your watch (not your phone).  You will have to set-up the voicemail.  Once setup you need to play the message the employee just left and hit 7 to delete.

5. Now have t-mobile change the watch line back to a DIGITS line.

That's it.  The voicemail notification should be gone and duplicate notifications should be fixed.  I suspect you don't need step 5 if you only have the duplicate notification issue but might be better to just do everything.  Like I said before, I am a t-mobile fan but it is frustrating to be told to just live with it or that the issue is how it is designed when it is clearly an issue with t-mobile.

T-mobile (if you read this) please clean-up this process into a useful KB and ensure all support staff is made aware that there is a fix.  You could even troubleshoot this and see what steps are and are not needed to make it more streamlined.

I have a theory on why this happened.  When we went to the local t-mobile store to get the watches they didn't have what we wanted in stock.  So they ordered them for us.  However, they wanted to activate the new lines for the watches in the store (I suspect that benefits them - which is fine).  So they activated the new watch lines to SIM cards they had in the store and told me when the watches arrived to come in and they would switch the lines to the SIM built into the watch.  I did just that.  I suspect something about having the lines initially activated to the SIM cards in-store and then changed to the watch SIMs caused the issue.  Perhaps that process was done incorrectly in my case or perhaps it needs fixed and then the issue would be resolved before it starts.

I never post to these things but have really enjoyed the watch so much more since fixing both issues and wanted to share.  T-mobile - there are numerous people in these forums who have just returned the watch had given up (and some that likely left t-mobile over it).  I'd take the time to get this fixed.

GOOD LUCK!