Rule reminder
Emphasis scale (additive): anche (neutral addition) < persino/perfino (unexpected/remarkable) < addirittura (extreme beyond expectation). Negative scale: non...neanche/nemmeno/neppure (not even) < non...mica (not at all, corrective) < non...proprio (really not, total refusal).
The speaker wants the MOST EXTREME degree: 'He was so upset he ___ threw his phone against the wall.'