his/her mobile phone
Tom está comprobando sus mensajes en su móvil.
Tom is checking his messages on his mobile phone.
El socorrista estaba entretenido con su móvil.
The lifeguard was engrossed in his mobile phone.
Hablemos primero del mensaje que recibió en su móvil.
Let's talk first about the message you received on your mobile phone.
— Contratiempo (2017)
Daniel nunca sale sin su móvil.
Daniel never goes out without his mobile phone.
— Contratiempo (2017)
Si hay cambios le llamaré a su móvil.
If there are any changes, I will call you on your mobile.
— Audition (2000)