Some users of the Huawei Mate 20 Pro complain about screen problems, consisting in the appearance of strange stains or discoloration or uneven backlight. Panels for Mate 20 Pro are provided by two companies and the vast majority of defects concern screens from a single manufacturer.
Huawei Mate 20 Pro is one of the best flagships on the market, and for many people by far the best smartphone in 2018. I do not necessarily share this opinion, but I perfectly understand those mania who are delighted with Mate 20 Pro – after all, this model is packed with technology and offers many interesting solutions. The screen seems to be the strong point of the Huawei Mate 20 Pro. It is made in OLED technology, guaranteeing infinite contrast and tarry, real black, as well as enabling integration with the fingerprint reader panel. The vast majority of tests and reviews of the Huawei Mate 20 Pro (including ours, which is already in the final stages of preparation), is praised by the Mate 20 Pro screen. The problem is that testing is one thing and the reality is the other, because many users of Huawei Mate 20 Pro complain about very unpleasant problems with the screen of your phone .
Stains, uneven backlight, green glow
Most of the owners of Mate 20 Pro complain about strange spots of different sizes that appear in different places on the screen. Some people have already started talking about the Gluegate affair, because everything seems to indicate that the problem is related to the glue that "spills". Look at the video about what this fault looks like: There was a big thread on XDA devoted to the whole issue . There are a dozen reports about the vulnerability and most of them concern the appearance of spots, but I also saw complaints about uneven illumination (gray or dark board has problems with clearances) and a green color around the folds of the screen. All these undesirable phenomena may or may not occur for the same reason.
Who provided the defective screens?
OLED screens for Mate 20 Pro are produced by two companies: BOE and LG. The vast majority of users of the full-featured flagship Huawei claim that their phone has been equipped with a panel from LG . Koreans have not recently had an easy life when it comes to their OLED screens – I remind you that this company also provided panels for Pixel 2 XL, which also had problems with the display. If you have Mate 20 Pro and want to check who produced his screen, then download the Device Info HW app from the Google Play Store . In the general section, you'll see who provided the screen.The summary will be short – similar situations should not happen on smartphones for such money , regardless of the manufacturer. Fortunately, there should be no problems with the return of faulty art to the store / operator. Source