My phone keeps disconnecting or will not connect when dialled

[jockman]

Phone will not connect when numbers are dialled and also disconnects during calls with a beep

[Tourbillon De La Vie]

Did you attempt any troubleshooting? Restart the phone, re-sit the sim 

[JAMES4578]

@jockman Is nothing identified in the Diagnostics- Samsung Members-Support-Diagnostics. Another idea is to reset the Mobile Connection,go to Settings-General Management-Reset-Reset Mobile Network Settings.  Are you able to try another sim if restarting/reinserting sim and other Troubleshooting makes no difference, you may need to contact your Network in case any issues at their end.

[BandOfBrothers]

If all else fails vja the suggestions made by @JAMES4578 and @Tourbillon De La Vie 👍 then do consider a back up and factory reset @jockman 

If i can be of any further help please don't hesitate to ask  😎 

[AmirMhmd]

I have exactly the same issue since August 2024 update, the sim works fine on my s24 ultra, I was not experiencing this issue before August update , I can't make or receive calls, no mobile data, I have done factory reset but the same issue
The more annoying this and most horrible experience I had was yesterday when I decided to call samsung support
To my surprise they said that they will charge me 100+ for this issue, I told them this is issue is caused by system update not any damage to the phone, they insisted to that charge for fixing my phone
This is so ridiculous