i've never looked into satellite-to-mobile as a backup option, but I have another method going on, to cover times where there is a potential loss of mobile service
so, there are x4 networks in the uk, and i utilise all of them. for around £8 a month
I have three network, o2, and ee, all on esims, and vodafone on a physical sim (i keep the physical sim on a keyring holder thing that also holds the sim insert tool)
so, some sims have become really cheap now (e.g. lebara currently offer 50gb at 42p per month for first 8 months), so here is what I have:
- i have smarty esim, (piggybacks 3 network) and the deal is £5/month/40gb/exit anytime
- spusu esim (piggybacks ee) £2.90/month/1gb/exit anytime
- sky esim (piggybacks o2) £0.00/month/100mb (but keeps rolling over and the rollover is currently over 2gb)/ tied in to 36 months from when i used sky to sign up to an iphone 15
- lebara physical sim (piggybacks vodafone) £0.42/month/50gb/exit anytime
you can have x2 sims active at any time, I usually have smarty (my main number) and spusu active, and as im driving around you can see on apple carplay the signal bars on the top row and you can see there are times where x1 network has a very low signal or nothing, and the other network is at full strength. my spotify never fails while driving because when the first sim goes low signal the 2nd sim will provide the signal.
another example was that i was on a uk holiday back in august, glamping haha, and the networks 3, ee, o2 were all too low on the signal but the voda sim came to the rescue with full 5g