Photos exported from Photoshop look different on iPhone/Android.

Windows display profile issues

Here's something to try, your issue may be caused by the windows update and a broken display profile being loaded 

It'll only take a few minutes and is good troubleshooting.

At least once a week on this forum we read about this, or very similar issues of appearance differing between colour managed applications.

Of course you must not expect accurate colour with programs such as early versions of Windows "Photos”*, because in those early versions colour management is not implemented, so, such programs are incapable of providing accurate image display.

*Windows "Photos” does do colour management now and has for a while, but beware early versions and other apps that are non colour management compliant.

Unfortunately, with Microsoft hardware: Windows updates, Graphics Card updates and Display manufacturers have a frustratingly growing reputation for automatically installing useless (corrupted) monitor display profiles.

I CAN happen with Macs but with far less likelihood, it seems.]

The issue can affect different application programs in different ways, some not at all, some very badly.

The poor monitor display profile issue is hidden by some applications, specifically those that do not use colour management, such as Microsoft Windows "Photos".

Photoshop is correct, it’s the industry standard for viewing images, in my experience it's revealing an issue with the Monitor Display profile rather than causing it. Whatever you do, don't ignore it. As the issue isn’t caused by Photoshop, please don’t change your Photoshop ‘color settings’ to try fix it.

To find out if the monitor display profile is the issue, I recommend you to try temporarily setting the monitor profile for your own monitor display under “Device” in your Windows ‘color management’ control panel to “sRGB IEC61966-2.1”. (If you have a wide gamut monitor display (check the spec online) it’s better to try ‘AdobeRGB1998” here instead as it more closely approximates the display characteristics).

Click ‘Start’, type color in the search box,

then click Color Management. In the Devices tab, ensure that your monitor is selected in the Device field.

You can click to ADD to add “sRGB IEC61966-2.1” (or AdobeRGB1998) if not already listed there.

Again - IF you have a wide gamut display I suggest trying “AdobeRGB1998”

Once it’s selected, be sure to check “Use my settings for this device” up top.

And click on “set as Default Profile - bottom right

Screenshot of Color Management Control Panel

Quit and relaunch Photoshop after the control panel change, to ensure the new settings are applied.

Depending on the characteristics of your monitor display and your requirements, using sRGB or Adobe RGB here may be good enough - but no display perfectly matches either, so a custom calibration is a superior approach.

If this change to the Monitor Display profile temporarily fixes the appearance issue, it is recommended that you should now calibrate and profile the monitor properly using a calibration sensor like the i1display pro, which will create and install its own custom monitor profile. The software should install its profile correctly so there should be no need to manually set the control panel once you are doing this right.

Did you embed the profile in the exported images? 

Please set the Status Bar to »Document Profile« and post meaningful screenshots.