From reality: a friend just made the transition from iPhone 5 to 6+ and had the plan to exchange his iP5(SkyDemon)+iPad2(SkyDemon+JeppFD) combination with only the 6+. He went wrong, because his JeppFD subscription is not supported on iPhones. Jeppesen does only Tablets (yet) and a Phablet is treated as phone - bad thing, but thought to spread this a a warning.