MACBOOK AIR M4 Staingate issue help

I cannot really tell from those pictures, but that does not look like the coating issue. I know it is really hard to get good pictures of screen related issues due to the lighting & reflections and just the glass itself.

I agree with @ninad14, that it looks more like a residue left behind on the screen.

You need to make sure your microfiber cloth is clean. Plus while cleaning the screen you may need to use a fresh dry section of the cloth to help buff out any residues. I use the old LCD cleaners even on the current Macs in order to help cut through the grime a bit (the laptops I support tend to get very dirty). The LCD cleaner is still mild enough to not damage the coating at least with occasional usage.

With the more recent Apple laptops, I find I must use a clean dry microfiber cloth to buff out the residue if you initially used water (or other liquid) at first. A clean cloth is critical. A dry cloth is critical. This will allow you to buff it out. The type of microfiber cloth can also play a role in how well it cleans the screen. You may need to flip the cloth to a fresh clean dry section a few times as well or you may just end up smearing the residue around. Sometimes I have to go back with a damp cloth, followed by another dry cloth. It is hard to clean these newer screens.

As fellow Apple product users, we cannot accurately give you sound advise on this. Only Apple themselves can. Make a Genius Bar reservation at your nearest Apple Store. They will personally evaluate your device for free and give you the required info that we cannot give you.

Genius Bar Reservation

Anmol- wrote:

I ALWAYS CLEAN MY MAC BY MICROFIBRE CLOTH

That is a pretty brood statement, and not exactly clear which one you are referring to or if you mean you used a cleaner and wiped it off with a MicroFiber cloth. In both cases, there are certainly some products/cloths that will damage your screen and even confirmed by Amazon reviews from other users.

There is not a Service Program for any screen issue for the M4 that would cover it out of warranty, but you can contact Apple or schedule an appointment for evaluation.

Genius Bar Reservation and Apple Support Options - Apple

Here's something to try to determine if it's a "staingate" issue or just a cleaning issue. Take your finger tip and put it on the affected area of the screen. Rub it or twist it gently on the screen a few times. Observe the screen afterwards. Does the haze pattern change at all? If it does, it's likely some form of residue, quite possibly from what was used to clean the screen. Many (if most) screen cleaners have surfactants or some other ingredients that can stay pretty persistently on the screen as a visible residue. It can be quite difficult to clean this off effectively. I agree with HWTech that it may be residue rather than some form of "staingate". Today's MacBook screens can be pretty difficult to clean perfectly, as it came from the box. I find using distilled water and a very clean microfiber cloth works the best on MacBook screens, despite lots of costly cleaning sprays that claim otherwise. Be sure it is in fact distilled water. It's cheap (about $1.00 here for a gallon in the US) and will last you a lifetime. The cloths I personally use with the best results are iKlear DMT (Dual Micro-Textured) microfiber cloths which are dual sided with a different texture on both of it's sides.

If the stain pattern stays as it was before the fingertip twist/rub, then the issue may be more serious and you should look into taking it to Apple to see what they say about it.

A possible cause could be when you cleaned it you left the liquid on the screen for too long letting it dry. This could have damaged your screen. As the other person said go to Apple make a Genius Bar reservation and they will evaluate this.