'functional phone' is correct and usable in written English.
You can use it to describe a phone that is capable of performing various functions, like taking pictures, sending text messages, and surfing the internet. For example: "This isn't just a phone; it's a high-end functional phone that can do almost anything."
A relatively functional phone – it was about time T-Mobile got some – this phone has MP3, AAC, AAC+, eAAC+ playback from its microSD memory card slot.
My question though, at 11.6-millimeters thick, does it really have enough juice to be a functional phone and media player?
In the Golden Ring towns — several of them, anyway — this means decent, occasionally even charming hotels, functional phones and Wi-Fi, better restaurants and innumerable churches and monasteries lovingly rescued from Soviet-era neglect.
Rather than simply being an app with SMS, MMS, or group messaging features, founder Scott Lahman says that he wants textPlus to become an end-to-end mobile communications service that makes smartphones global and turns tablets into fully functional phones — without the friction and costs traditionally associated with that kind of service.
As we suspected, the device is a module -based GSM system that includes a small, fully-functional phone and a set of "mates" or "jackets".
"Thanks to a growing middle class and increased connectivity, provided by lower cost yet highly functional Android phones and tablets, there is a tremendous demand for services.
It's important to note that the combination of IM, calling and the apps will not work on CDMA Android phones, but is functional on LTE phones.
In the future, Epson Imaging Devices intends to broaden the application of this new technology to various fields, including displays for satellite navigation, rear-seat entertainment, and other in-car systems; for digital still cameras; and for digital-TV-compatible multi-functional mobile phones and devices.
That involved calling over 100 people a day using an archaic but functional web-based phone system.
In order to make the 'new' phone functional with the new bumper case, Apple simply cut a bit more out of the mute switch opening.
