IMS service keeps stopping

[usertlQPNJckPZ]

New s9 purcahsed in the US , updated the Samsung update this morning, and this error keeps coming up, tried Samsung Australia ,  was told since it is a US phone, only the US can help you, contacted the US help centre (in India ), spent 3 hours chatting , tried very single option, answered every single question,  was told cannot help you, contact the Australian office, unbelievable ...Samsung would show such disregard. Shocked. No one was willing to give me any further contact names for Samsung management to escalate the issue, Have tried all the fixes on line , nothing seems to work. Really disappointed  SCAMsung....

[BDub]

I found the carrier reset code. Try rhis from thw dialpad. ##72786# or ##SCRTN#

[Rohan0091]

Did it work?

[userzwfB3TFc79]

The same problem here since the last update about a week ago (7 Sep. 19)

Samsung S9+ on Optus network

Tried all  the recommended solutions here with no luck.

[SamsungQue]

Thank you for reaching out. I would like to escalate this concern to my product specialist team. Can you please provide me with the following information:  
 
Model code: 
Carrier: 
Software version: 
Your location (Country the device is being used in currently) 

Broadband Number:

[Samsung_rJyAARY]

This is a bad headache I don't need. And the so called connection never stays on point!. NNEVER

[userkDCnMbXTTv]

Another affected user here - in this case a Galaxy S10e purchased in California in July that was running flawlessly here on Optus until it updated on Saturday. Trying to operate the phone since the update is so slow that it is intolerable. I've had to put the SIM back in my old HTC.

Please fix this quickly Samsung!

[usergvWGIz6Pwl]

here's one solution that worked for me, posted already, seemed nobody went through that, here it goes:

- backup messages and clear data from messages app

- clear data from IMS service app

- restart, and you're good to go

I thought it was a problem with ROM during update, but steps above solved my issue.

P.S. I only cleared cache of messages app and not data at first, so had to deal with the issue for 2 days, 13 sept to 15 sept, solved for 3 days now.

[userQK5L0esuBm]

I received the subsequent update this morning (although it seems as though phones receive it in batches rather than all at once) and all seems to be working fine now.

Model: SM-G960U1 (US unlocked)
Old Baseband version: G960U1UEU6CSH7

New Baseband version: G960U1UEU6CSI1
Country of Use: Australia
Service Provider: Optus