Internet connection stopped working


I configured a HAT with PPP tutorial and auto-connect service, and it successfully worked for a couple of weeks. However, today the HAT did not connect to the internet. Service is active and I don’t think there is a configuration problem, as it previously worked and still works in other raspberry Pis with the same SIM card provider.

How can I discard any hardware problems?

I attach image of the Raspberry with the 4G module:

Hi @edsonrm117,
Thank you for getting in touch!

It doesn’t look like a hardware problem
Please share the whole log of sudo pon .