I have the Cubot x15 and if that happened it would be my sign to replace it. Repair here costs more than a new one.
For a quite long time my CUBOT x6 has a disturbing grey lined flickering, really darker colors and low transparent visible apps or anything screen had signals from before.
More than a half year ago, I had my screen connectors reconnected because of tough times with screen touch, hard to remember actually, but this problem was solved succesfully. Not sure if this is coincidence, but some months after, all of a sudden screen started to grey flicker. Especially darker areas, but sometimes it becomes really vibrant that flicker, sometimes its really low, but still visible (lots of thin thin grey bars). Does not matter if it is instagram photos, or a menu. I recognised colors to be really darker, and as I always use the lowest brightness, it became a necessity to use almost max brightness to see clearly. Moreover you can see apps fragments visible on the screen, but on very low opacity. Like there is menu, but you can see "instagram" title or even story bubbles transparent.
Today I had my ROM flashed, because of reasons, but one of them was probability of all these problems to be OS caused. They are not...
Reconnecting does not help. What is happening?

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