If a device is having any connectivity issues or is unable to do data, resetting the (e)SIM assists in solving the issue.
However, in some cases, it might be necessary to restart the whole IoT setup that includes the (e)SIM, cellular module, and the device to rerun the startup procedure of the whole setup.
If you have physical access to the device, a simple restart (ON and OFF) will achieve this result, however, if you do not have access to the device, kindly check with the device manufacturer (for both the cellular module and the Device) to confirm if your setup can be reset remotely.
Usually, a lot of devices and IoT modules can be restarted remotely via SMS or AT commands.