Translation guide
In Japanese, 'cellular phone' is most commonly expressed as 携帯電話 (keitai denwa) or simply 携帯 (keitai). The term スマホ (sumaho) is used for smartphones. This guide covers how to refer to mobile phones in various contexts.
Referring to a cellular phone in everyday conversation.
Short for 携帯電話. This is the most common casual term for a mobile phone. Used in daily speech.
I forgot my cell phone.
Short for スマートフォン (smartphone). Used for smartphones specifically. Very common in casual speech.
The full term for 'smartphone'. More formal than スマホ. Often used in written or technical contexts.
Distinguishing between feature phones and smartphones.
Slang for traditional Japanese flip phones (feature phones). Stands for 'Galapagos keitai', referring to their unique evolution in Japan. Common in casual speech.
Referring to a mobile phone number or contact information.
Referring to cellular phones in technical, business, or formal contexts.
If you are talking about a smartphone, スマホ is more specific and natural. However, 携帯 is often used as a generic term for any mobile phone, including smartphones. In casual conversation, both are acceptable, but スマホ is clearer when you want to emphasize smartphone features.
The direct translation 'セルラーフォン' is not used in Japanese. Always use 携帯, スマホ, or related terms.
My cell phone battery died.
The full term for 'cellular phone'. More formal than 携帯. Used in official contexts or when clarity is needed.
Please refrain from using cellular phones.
I bought a new smartphone.
The smartphone penetration rate is high.
Are you still using a flip phone?
The technical term for 'feature phone'. Rarely used in daily conversation; ガラケー is preferred.
Feature phones evolved uniquely in Japan.
Means 'cell phone number'. Commonly used when exchanging numbers.
Please tell me your cell phone number.
Another way to say 'cell phone number', slightly more casual.
Did your cell phone number change?
The use of mobile communication devices is prohibited.