As one of the most popular smartphone, new iPhone 6S Plus or iPhone 6S can make your life easier and more convenient. For example, if you are a very busy person and always have one hundred things in your schedule, you really need Calendar to help arrange your working content more effectively and orderly. After all, even the smartest person cannot remember all the little things. However, some little things are quite important, for instance, a very important business conference, a date with your lover, and the birthday of your best friend, etc. Even you are very good at memory, you may still miss one or two of them unless some doable method can remind you in time, which may bring a great disaster for you.