携帯を

mobile phone

→ 携帯
phrase Uncommon #15,538
mobile phone 携帯 is a common shortened term for 携帯電話 (mobile phone). The を marks 携帯 as the object of the following verb. In other contexts, 携帯 can mean carrying or possession, as in 武器の携帯 (carrying weapons).
JA: 出かける前に、携帯を充電しておいて。
EN: Charge your mobile phone before you go out.

彼が携帯を水になぜそんな事を

Why would he put his phone in water?

— ファニーゲーム (1997)

私は携帯を捜している

I’m looking for my phone.

アメリカ人は武器携帯を許されている

Americans are allowed to carry weapons.

携帯を家に忘れちゃった

I accidentally left my phone at home.

トム携帯を家に忘れてきたんだよ

Tom left his phone at home.

トム携帯を代わりにしてたよ

Tom was using his phone as a mirror.

社長話す前にまず携帯をオフ君はうちに来て何年になる

Before the president speaks, turn off your cellphone first. How many years has it been since you joined our company?

— ラブ・アクチュアリー (2003)

携帯をしまってもらえますか

Could you put your phone away, please?

メアリー携帯をなくしてしまった

Mary has lost her phone.