We have 3 for phone and broadband SIM here. ONLY because they offer coverage in our rural location that is patchy at best on O2, VF and EE.
When it works, it’s fine. Cheap as well. But their network seems to suffer pretty bad outages and poor performance. If we had the choice we’d use someone else, but at £10 SIM Only monthly for 12 gig/unlimited calls/texts and (currently) roaming plus 23 quid for SIM Only broadband that gets us 50 meg/10 up, we’ll be sticking with them for now.
If stuff goes wrong tho, you cannot report it. Whoever designed their support systems thinks entirely in circles 😉