What should I do if I can't find the information icon of OPPO R9 mobile phone on the desktop?

At the bottom of Settings-Other Settings-Application Management-Default Application Management. Set the desktop back to the system desktop. Then the desktop can be changed back and will not disappear.

Knowledge supplement

1, OPPO R9 mobile phone adopts front fingerprint identification technology. Press the fingerprint identification HOME button on the front, and one * * * supports the input of five different fingerprints, unlocking 0.2s for quick identification.

2. The HOME key of 2.OPPO R9 is made of zircon. The Mohs hardness of zircon fingerprint bond reaches 8.5, which is almost the same as that of sapphire 9. This material has unique advantages in durability and signal propagation intensity.

3. From the actual use, the unlocking speed of OPPOR9 is very fast, basically the screen has been unlocked while pressing the HOME button. The reason why OPPOR9' s fingerprint identification function can be so rapid is mainly because it belongs to learning fingerprint identification, which has three abilities: self-adaptation, self-learning and dynamic matching.