Surface 3 LTE has no internet on HSPA+ network

As a follow up of this still unanswered question...

Sometimes I do have internet for a while on the HSPA+ network on my Surface 3 LTE. However, after a while it says:"Connected, no internet" The only thing I can do to fix it in that case is to restart the tablet. In some cases that takes forever! If I try to disable the adapter and enable it again that seems to fail as well.

Last week I noticed my Surface 3 was connected to 4G/LTE and I didn't have any issues with the connectivity. However, my Lumia 950 was connected to 3G/HSPA+ and I saw the connection being lost every once in a while.

Reason for my question this time: on the Lumia 950 I saw the connection become alive again after a while. The network adapter seemed to be polling for a better connection. On the Surface 3 (as mentioned) the only thing I can do is to restart the machine. **Is there a way to force the 4G/LTE network adapter in the Surface 3 to be reset?**Are new network adapter drivers available perhaps?

And some added info.... I'm still hoping at some point someone will come along and have a solution...

This morning I changed the setting of  the adapter and disabled the setting "Selective suspend". It seemed to go better and I even had quite a long time of internet using the HSPA+ network. Then all of a sudden it was dead again :(

The thing is: as soon as internet is gone the connection is still active and enabled; there is just no internet on the connection. And in most cases: disabling the adapter will just cause device manager to get stuck. Rebooting the Surface get stuck in a lot of cases as well... It ends up by me holding the power button.

The driver version of the adapter is 10.0.10586.0 Not sure if newer drivers are available, but in the package that I found here: https://www.microsoft.com/en-us/download/details.aspx?id=49041 no drivers for the modem were included.

I feel the mobile operator has done everything they could.

Last week, while in the office, I connected to the mobile network rather than to WiFi and at some point I saw it connect to HSPA+ and after a while I noticed there was no internet anymore. All I could do was restart the Surface.

This morning in the train I had to restart the Surface 3 or 4 times! And sometimes while trying to restart it takes this long that I have to hold down the powerbutton to restart it. No one has an idea? There must be some sort of logging possible right?

Is it just a bad modem adapter?

Hello,

By now I have tested 2 SIM cards. Because of another issue I had my Surface 3 replaced as well and the issue still exists. Since my Lumia 950 doesn't have any issues and restarting the Surface 3 it must be an issue in the internals of the Surface 3 or Windows 10. Any ideas on how to trouble shoot this next?

Thanks!

I have been in contact with Vodafone. They have made some changes, but unfortunately the issue remains there. Both my Lumia 950 and my Surface 3 LTE have a Vodafone SIM. As long as the Surface 3 LTE is on 4G/LTE everything is fine. As soon as internet is gone I check the connection and every time that happens I notice I am on HSPA+.

If I reboot the Surface it immediately has internet connection using 4G/LTE again. If I disconnect mobile internet and try to reconnect I get notified the APN is not correct (which all of a sudden is not an issue after rebooting). That makes me think it is more an issue with my Surface 3 LTE than with the provider.

This morning I made a picture of my Lumia 950 next to my Surface 3 LTE both on the Vodafone network. One did have internet access and the other didn't. It is never the other way around.