Describe what your OCs phone would be like, in however much detail you desire.
It's a fuck-off massive block of acrylic, glass-fiber reinforced nylon, steel, and lead radiation shielding constructed with a hull crush depth exceeding that of a Virgina-class nuclear attack submarine. Functionally it's several jumbotrons hooked up to an a Dell Optiplex on a tablet interface, but with a chassis requiring the full manufacturing capabilities of a mid-sized shipyard. Yes of course she's got lil charms on it. If she's careful she only goes through half a dozen every year.
Cholla doesn't have a phone number, always shows up blurry in pictures, is 9' tall with handpaws too chonky to use a normal phone touch interface or keypad. Still manages to text you somehow.
Sam just steals whatever's most expensive at the time. Usually lasts a few days. Sometimes she goes through a few a day.