S24U S24 Ultra mobile data not connecting

[DR-]

Seemingly out of nowhere, my S24U is refusing to connect to my mobile data.

I am able to make and receive both calls & SMS.

In a bid to solve the problem, I have:

1. Restarted the phone

2. Toggled airplane mode on & off, then restarted

3. Manually added the network (setting up ne APN, username, password etc)

4. Reset APN to default

5. Taken out & replaced sim card

6. Downgraded network option to 4G and below

7. Deactivated SIM in the SIM manager, switch phone off & on, then reactivated 

8. Switched from SIM1 to SIM2 

Despite all of this, trying to use the Internet is a miserable experience, full of "no Internet connection" messages & the buffering wheel of doom.

Does anyone have any other suggestions/also experiencing this?

[ItsMarty]

I've got the same problem.  Even changed network providers from Optus to Telstra thinking the phone was locked to Telstra after doing an imei check online, but nothing helps.  Does anyone have a solution?  I think this happened to my S24 when the system upgraded now there is no option in the network settings that allows  3g/4g/5g option on the sim cards network setting.  it just gives me the option to use either 3g or 4g.   So frustrated.  @SAMSUNG Please put out an update that will fix this.