No, it isn't. Just install a Smart Cover so that when you do not use your phone, you can cover it to protect the screen. Even your phone is sticked with film, oil pollution will still appear on your screen. Even it is the best film, its visual and touch effect is not as good as the orginal screen. Apple finally devised a more reasonable and lightweight body size with much efforts. If you cover it and stick film, you will go against the original intention of product. The Apple personnel has considered the impact on normal use of the screen. It will not have any problem.
No, it is not necessary. You had better to stick film so that your ipad will be not easily scratched. The film basically has three kinds: 1. The HD and transparent film looks like no film. When you are calling, your phone will close to your face and you will feel a bit greasy. 2. The frosted film looks like a bit fuzzy, but does not affect the use. At the first, you may be not accustomed, but after a long time, you will be accustomed. The biggest difference between this film and high-definition film is that it is dry, and you won't feel greasy when you touch it. 3. Diamond film There is some so-called sparkled diamond fragments in it. But whether there is diamond fragment, has not been studied. It is the same as high-definition film, feeling a bit greasy.
