The LoFone is marketed as a minimalist 'dumbphone' that comes with an economical E Ink display and completely dispenses with distractions such as social networks. Unlike most direct competitors, apps such as WhatsApp and Spotify will still be available.
And it has a replacable battery and headphone jack. What is this madness? Next you will be telling me it has an sd slot.
My only worry would be whether the software gets patched to fix security vulns and in reaction to breakage with 3rd party services (e.g. whatsapp).