After the iterative upgrading of major manufacturers in recent years, the folding screen has gradually overcome the pain points such as weight, creases, durability, etc., and shifted the focus to the system and image, striving to make its own folding screen like a straight board machine become everyone's main machine, and the feedback from the market has also proved that the folding screen does have the potential to sit on an equal footing with the straight board machine. So, does this mean that we can not care about the traditional pain points of creases anymore?Unfortunately, the truth may be a little different from what everyone thinks, and the crease performance may still be a big factor for you to consider. 
From left: Huawei Mate X5, Oppo Find N3, Samsung Z Fold 5).
Here we have selected the three popular mainstream folding flagships: Samsung Z Fold5, Huawei Mate X5, and OPPO Find N3, and take a look at the crease performance of each from different angles. First of all, when the screen is off, the three mobile phones are laid flat on the desktop, and from an angle close to the front of the face, the creases of the Samsung Z Fold5 are relatively obvious, concentrated in the middle, while the Huawei Mate X5 is relatively flat, only there are slight creases on both sides, the look is not as obvious as Samsung, and the bright performance is the OPPO Find N3, the creases are almost invisible, and they are quite flat. 
Next, let's turn the angle,Look at it from the side,We will find that the result is basically the same as the situation above,Samsung Z Fold5It is still the one with the deepest crease,There is a depression in the middle visible to the naked eye,And Huawei Mate X5 and OPPO Find N3The performance is better,There are no big creases,It proves that these two large folds whether you look at it from the front,Or others from the side,The look will be very flat,Look more "mature"。 
After looking at the situation under the condition of the screen off, let's see if there will be a difference between the three models when the screen is lit. For the more common bright screen scenes in real life, the crease performance of the Samsung Z Fold5 is improved compared with the off-screen state, but if you look closely, you can still see the existence of creases in the middle, and the performance of the Huawei Mate X5 is closer to that of the screen-off, with slight convex on both sides, so you can see two shallow traces. As for the Oppo Find N3, it still continues to be extremely flat, giving it the feeling of being more like a complete tablet, and the creases are not perceptible for daily use. 
Of course, I think some people will definitely say that these three wallpapers are different, the colors are different, and they have an impact on the creases, so we will unify them into a settings page, and the overall picture is mainly white. Judging from the actual shooting results, the performance of the three models is consistent with the previous situation, and in terms of the flatness of the screen alone, I will still vote for the OPPO Find N3, and the crease has almost been achieved. 
Seeing this, I would like to make a summary of this horizontal review. The crease must not be completely eliminated, but the manufacturer has the obligation to control the crease as shallowest as possible, and even to achieve the visual perception of "disappearing", as a user, naturally I don't want to read**, or when writing a document, there is a crease in the middle between me and the screen, even if it is not obsessive-compulsive, I will feel diaphragm. I have to say that at this point, the OPPO Find N3 gives me the best impression, and the crease performance of these three models is relatively good, and I think this has a lot to do with the third-generation Seiko pseudo-vertebral hinge developed by OPPO. 
oppo find n3）
In addition to the excellent physical structure scheme, this generation of hinges also pioneered the four-wheel drive torque design, and introduced new materials such as zirconium-based liquid metal, which can effectively disperse the stress generated by folding, reduce wear, and improve the strength of the hinge, which is why it can pass the 1 million fold test of the Rheinland laboratory. In addition, the OPPO Find N3 screen is made of UTG glass, which is flatter than common plastic films on the market, and the creases are naturally more "**".
oppo find n3）
Therefore, it is not difficult for us to come to a conclusion, compared with the past few years, the maturity of the folding screen has indeed improved a lot, and the crease is obviously not the primary problem faced by the manufacturer, but it is above the passing line, which does not mean that the scores of each company are the same, and when starting the folding screen, the crease should still be considered. At the moment, the Samsung Huawei is relatively good, and the Oppo Find N3's crease performance can be called the first echelon in the industry, and the durability is also superb. So, if you're looking for a flat look, a model like the OPPO Find N3 will be more suitable for you.