noun
rental mobile phone; rental cell phone
A mobile phone that is rented, typically for short-term use by travelers or as a temporary replacement.
海外旅行のときは、空港で貸し携帯を借りるといいですよ。
When traveling abroad, it's a good idea to rent a rental mobile phone at the airport.
この貸し携帯は1日500円で利用できます。
This rental mobile phone can be used for 500 yen per day.
Compound of 貸し (kashi, 'lending') + 携帯 (keitai, short for 携帯電話 'mobile phone').