I am considering switching my SIM card into a spare Android phone I have, in light of two issues:
2) The Android phone I've been using is very old and has problems charging (I think due to battery and a faulty charge port). I haven't replaced this yet. Today, the phone outright won't turn on (maybe due to a virus, but I think more likely it's due to not charging well over night and becoming completely depleted of battery, which has happened before). Worse yet, it isn't taking a charge at all as far as I can tell, even with usually reliable chargers.
My solution to issue #2 is to swap my SIM into a spare Android phone I have, at least until I fix the power supply on the first phone. However, in light of issue #1, is it a bad idea to start moving my SIM into other phones and potentially spreading whatever malicious thing may have texted my friend from my phone? I have more digging to do on issue #1 (checking with other common contacts, reaching out to my carrier somehow) but wonder if there's any useful info on the immediate question: is it safe to switch a SIM card from a potentially infected phone into a fresh spare phone?
The spare phone belonged to a family member long ago and is effectively mine now. I can factory reset it before putting my SIM in.
I've looked for info on this (Can virus save to SIM Card? and Can a SIM card propagate malware?) but am finding mixed/uncertain messages about whether my SIM card could propagate a virus. I'm not interested in theory here, but in practice. I realize we can't be certain anyway, since I'm not even sure if my phone has a virus! (See #1 above)