I am a complete dummie, so please, don't burry me under super tech details.
Bought a used allegedly unlocked M7200 modem, trying to connect to the internet and getting an error "DNS server is not found". The seller swears that he used it in several countries with several various SIMs and had no problems.
ISP - NOS Portugal
Laptop with Win 10
please, help to solve this one, thank you!