cellular phone
Synonym discussion
Sense: noun/1
Cellular phone, cell phone, mobile phone, and smartphone are close in meaning, but they are not used in exactly the same way. Cellular phone is the longest and most technical-sounding form, and it appears more often in official, legal, or older wording. Cell phone is the common everyday American term. Mobile phone is the broader international label and sounds natural in British English and many other varieties. Smartphone is narrower: it names the modern kind of cellular phone that can run apps, go online, and do much more than call or text. If you are speaking casually, cell phone or mobile phone usually sounds more natural than cellular phone.