Mobile data not working since update

[Nikkiniks12]

Hello I recently updated my s21 ultra and since then my mobile data isn't working and network is really bad most time my phone says emergency calls only I've done all the trouble shooting changed network provider and even factor reset my phone nothing has worked is anyone else experiencing this issue and how do I resolve it please thank you 

[BandOfBrothers]

To help determine whether this is your phone , network signal or your sim card at fault can you try your sim card in another phone.

And another sim card in your phone @Nikkiniks12 

You can also run the diagnostic tool in your Samsung Members app.

A Samsung Service Centre can assess your phone if necessary. 

If I can be of any further help then please don't hesitate. Take care.  😎 

[GoanGeek]

Reset network settings and see if it helps.

Also make sure apps are updated in both Samsung and Google store .