Hello Varvatos,

...the M7650 only has an interface for the mains cable for charging. There is no connection for a LAN cable. The WiFi can be set via the online router setting - continuous operation (until the data volume is full, then it switches off automatically), or a setting for a time loop (8:00 to 22:00). I had the M7650 in continuous operation as a home hotspot with a SIM card, as no Internet cable was offered. After about a year, the continuous operation regularly switched off automatically after 48 hours because it was constantly filling up (whatever !, I'm not a technician).

I then contacted TP-Link, who helped me very well after some initial hesitation. I then received a TP-Link Archer MR600 (with SIM card) in exchange as a warranty case and am now very satisfied with continuous operation without any failures with download/upload 140/30Mbit/s.
I would not recommend the M7650 as a home router variant. It's ok for a holiday trip with a country SIM card. As a home network router, I would recommend the Archer MR600 or subsequent models if you live in the country and access the Internet via mobile radio.

Regarding the cost of the data stream - I have an unlimited Internet flat rate via O2 on a partner tariff (i.e. there are two mobile tariffs for my wife and me and a SIM card with a contract for unlimited data flat rate for home Internet) for €20 (not including the two mobile tariffs). We don't have a landline, just Internet and 2 mobile phones.

I hope I was able to help you, vG Stephan