The Nokia 3710 fold is a compact flip phone with rounded edges and a hidden exterior display. The Nokia 3710 fold's main display measures 2.2-inches across while the exterior display, which disappears from view when the phone is inactive, measures 1.36-inches across. The Nokia 3710 fold incorporates a 3.2-megapixel camera (4x digital zoom, autofocus and LED flash) and comes with a music player which supports all of the major audio file formats. The 70MB of on board memory can be expanded up to 8GB with microSD cards. Unfortunately the headphone jack is 2.5mm, which means that you won't be able to use your favourite headphones unless you have an adapter.