Samsung Messages not sending texts

[the_bart123]

Samsung Messages not sending texts is this a reason I have Google Messages "disabled"?

I've noticed Samsung Messages app is just 11MB and Google Messages crazy 230MB - is Samsung Messages just "skin" to Google Messages which must be fully running?

I cannot understand why such a basic Samsung app is not doing such a basic task 😞

My S21 on UI 6 and everything on latest updates

[1ts_1vAn]

...

[JAMES4578]

@the_bart123  you cannot run both apps simultaneously,   to use your preferred  need to set it as the Default.   Are you sure the problem is only with the Samsung app and there are no issues with your Network?

For  Troubleshooting firstly go to Apps-Messages- Storage and clear the  the cache.  You may need to reset the Network Settings,General Management-Reset. With One Ui 6  you can Reset Mobile Network Settings seperately to  Wifi and Bluetooth Settings.

If still happen to be issues An idea to also check your Sim card, if all seems ok reinsert. otherwise may need to contact Network.

[the_bart123]

That's my last day with S21 - tomorrow amazing S23 Ultra - I gonna restore it from that S21 backup SSD via Smart Switch - if problem keep happening- I will know I have something wrong with settings OR it is UI6 problem.
Side question - how to restore USB storage backup?
New phone Factory Reset - go through initial setup - when finished - install Smart Switch and click "receive data"?
I ask as in iPhone I could restore backup durnung initial setup.

[the_bart123]

So I got S23 Ultra and it has same problem:(
I've noticed it has problem with sending long text messages (short are fime) CRAZY.