"For internet backup I have a 4G modem right now, connected to my unifi router with auto failover and a script that adds credit to my prepay card over SMS. It serves me ok. But I'd love to have a starlink mini for backup. Just the regular one is a bit big so I didn't get it yet."
Is 4G a good backup? I am also in Spain and in my neighborhood we often suffer from power failure under heavy rain, I guess a local transformer is shorting as it impacts just a few streets around my house. But when it happens I also lose phone connectivity. The nearest antenna seems to be located in the few streets impacted and smartphone seemingly cannot reach another one nearby. This made me realize the short radius of mobile network range around a single antenna.