Bitcoin-Wallet Mycelium positions itself, neither more nor less, a "Wallet by default". It really is made very qualitatively: a convenient simple interface and many functions (both standard and innovative). Users of different levels of "advancement" positively respond about it and recommend to use. Mycelium Wallet is for the more adept bitcoin user - giving coin control features. The wallet is backed by a large active development team that is continuously innovating. Android Mobile is the main platform although the team has developed cold wallet prepaid cards too, that can act as a form of cold storage.