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2 min read 6 comments

Gluegate: display issue could stain Mate 20 Pro's reputation

More and more units of the Huawei Mate 20 Pro are showing stains on the display. The disturbing display errors are apparently due to a processing error. This last occurred on the Nexus 4, when the display wasn't glued on properly. The gluegate bug is apparently affecting several models of the Huawei Mate 20 Pro and could become a serious problem for the entire series.

Huawei's Mate series is considered the industry leader when it comes to display utilization. With the Mate 20 Pro, the almost bezel-less and front-filling display is again one of the most important unique selling points for an expensive top model. However, some users are currently disappointed because a processing error has clouded the overall appearance with stains. A user in the XDA developers forum has already found about a dozen of these cases so far.

Even though the number of cases is still manageable and most models are flawless, including our test device. This means there's a small PR disaster looming for Huawei. Of course, the issue is covered by a warranty and customers can exchange the device for a new one. We are currently clarifying the exact details of this process with Huawei spokespeople.

Gluegate: stains on the display

Mate 20 Pro models that are affected by this issue have yellowish-green spots on the edge of the display. Especially with weak display lighting, you'll really notice the color error on the edge. This is shown in this video made by a concerned user:

In one case, a Mate 20 Pro user is reporting that the yellow stains on his model appear not only on the edge, but are distributed across the entire surface of the display.

However, the stains only become visible and disturbing in the dark or under poor lighting conditions. Previous photos of affected models were taken at night or in darkened rooms. This means that many of these gluegate cases will likely go unnoticed. It's also unclear how big the problem really is.

An official statement on this issue is still pending. Until it arrives, please tell us if you see similar spots on your Mate 20 Pro. Let us know if your device is affected and how you plan to proceed!

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  • I have the Huawei Mate 20 Pro and wondered if the direct sunlight and Ultra Violet Light would cure the green tint on the display.


  • Wow unbelievable! Seems like more and more dramas with these new batch off 2018 phones! Yes Pixel I'm looking at you!!


  • Coming from Singapore. Huawei Singapore statement at the moment is that the green tint seen on the devices are normal and can also be observed on other curved edged OLED displays. My Mate 20 Pro set has the green tint along the edges and i requested an exchange which was refused as the unit "is functioning as intended" and that unless i could prove that it was not working as intended they could not process an exchange. I was not alone at the service center that day with many other customers turned away when requesting an exchange for the working* unit *so as they claim. The green tint is becoming worse and can be seen on the display regardless of brightness level


  • Don't buy this phone, mines stuffed worse screen huawei won't do a thing


  • The OnePlus One had that problem when it first came out. Mine had a little bit, but I solved it by UV light & direct sunlight exposure. Shouldn't happen, but their supplier rushed the displays before they were properly cured.

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