This is the 17391st most frequent Russian word.
телефонах
"Телефонах" is the prepositional plural form of "телефон," meaning "phones" (used after prepositions).
The word 'телефонах' is used in the prepositional case, indicating the topic of discussion.
Мы говорили о новых телефонах.
We talked about the new phones.
The word 'телефонах' is used in the prepositional case to indicate the location where the information is stored.
Информация хранится в телефонах.
The information is stored in the phones.
Here, 'телефонах' is in the prepositional case, indicating the platform where the apps appeared.