I have had the Surface Pro 11 for several months now and was on my second road trip with it during the Christmas week when during the middle of work, my 5G connection dropped.

It recognizes the sim as T-Mobile but always shows no service. Rebooting, reseating the sim and reinstalling the "Surface 5G Mobile Broadband" driver has not resulted in any connection. I have checked with T-Mobile and my account and line are fine. I was only at 11GB of a 75GB plan.
In the System Event Logs, I do see a lot of Smart Card Service errors, event id 610 with different descriptions:
1.
Log Name: System
Source: Microsoft-Windows-Smartcard-Server
Date: 12/30/2024 10:47:12 AM
Event ID: 610
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: OneThree-SP11
Description:
Smart Card Reader 'Microsoft UICC ISO Reader c793387e 0' rejected IOCTL POWER: The data area passed to a system call is too small. If this error persists, your smart card or reader may not be functioning correctly.
Command Header: 00 00 00 00
Event Xml:
610
0
2
0
0
0x80000000000000
454132
The data area passed to a system call is too small.
Microsoft UICC ISO Reader c793387e 0
POWER
00 00 00 00
2.
Log Name: System
Source: Microsoft-Windows-Smartcard-Server
Date: 12/30/2024 10:47:02 AM
Event ID: 610
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: OneThree-SP11
Description:
Smart Card Reader 'Microsoft UICC ISO Reader c793387e 0' rejected IOCTL TRANSMIT: Access is denied. If this error persists, your smart card or reader may not be functioning correctly.
Command Header: 00 a4 04 00
Event Xml:
610
0
2
0
0
0x80000000000000
454129
Access is denied.
Microsoft UICC ISO Reader c793387e 0
TRANSMIT
00 a4 04 00
3.
Log Name: System
Source: Microsoft-Windows-Smartcard-Server
Date: 12/30/2024 10:47:02 AM
Event ID: 610
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: OneThree-SP11
Description:
Smart Card Reader 'Microsoft UICC ISO Reader c793387e 0' rejected IOCTL TRANSMIT: The parameter is incorrect. If this error persists, your smart card or reader may not be functioning correctly.
Command Header: 00 ca 7f 68
Event Xml:
610
0
2
0
0
0x80000000000000
454128
The parameter is incorrect.
Microsoft UICC ISO Reader c793387e 0
TRANSMIT
00 ca 7f 68
Removing the card and disabling cellular stops the generation of the errors. I thought about switching to an eSim, but T-Mobile said the Surface Pro 11 was not compatible. I have yet to order a physical SIM as I would like to see if it is a software issue. I don't want to pay for a replacement only to have the same issue.