他忘了带手机充电器。
He forgot the charger for his mobile phone.
大多数飞机上不许使用手机。
The use of cellular phones is not permitted on most aircraft.
很多人不断将手机升级到最高档的款式。
Many people are upgrading their mobiles to top-end models.
请确保演出时关上所有手机。
Please make sure all mobile phones are switched off during the performance.
我没有带手机。
I hadn't got my phone with me.