This is the 13235th most frequent Russian word.
мобильного
The Russian word "мобильного" means "mobile" or "of mobile" in English.
In this sentence, 'мобильного' is in the genitive case and refers to 'mobile phone', showing possession or association with the case.
Я купил новый чехол для мобильного.
I bought a new case for the mobile phone.
Here, 'мобильного' describes 'application', implying the application is designed for or relates to mobile devices.
Обновление мобильного приложения доступно.
The update for the mobile application is available.
In this sentence, 'мобильного' modifies 'устройства', referring to a mobile device and emphasizing the device's portability.