Phones stop working for lots of reasons other than "I've been fired". I'd still show up to work. It'd be pretty bad if your phone indeed had just stopped work

Phones stop working for lots of reasons other than "I've been fired". I'd still show up to work. It'd be pretty bad if your phone indeed had just stopped working, and rather going in to get it fixed, you just assumed you were fired and then stopped going into work, thus actually getting fired for not showing up.