Illustrative stock photograph; not a Meluvya result or a test of the technique. Photo by Kawê Rodrigues / Pexels.
The quick answer
The file, viewer, display, and room all affect how a photo appears. First confirm both screens are showing the same exported file. Then compare brightness and color-altering display settings, and inspect the export's color-profile options. Do not repeatedly change skin color until you have separated an editing problem from a viewing problem.
Start with an identical file
A chat preview, a browser image, and the original in your editor may be different versions. Compare actual files with the same dimensions and edit state. If you compare a source on one device with a recompressed delivery copy on another, the screens are not the only variable.
Adobe's color-management guidance explains that displays and other devices have different color capabilities and that profiles help translate color meaning. A profile can improve consistency, but it cannot make every screen and viewing condition identical.
Isolate the difference
Comparison
What it helps investigate
Same file, two apps on one device
Viewer or profile-handling differences.
Same file, same app, two devices
Display capability and settings.
Original and export in one viewer
Export conversion or processing.
Same screen in different room light
Viewing conditions and perceived brightness/color.
Use a practical display check
Set a comfortable brightness. Avoid judging one image on a very dim screen beside another at maximum brightness. Exact matching requires more than this, but the comparison becomes less misleading.
Review color-altering modes. Temporarily compare with night or warm-display modes disabled if your device offers them. Restore your preferred settings afterward.
Check export profiles. For ordinary web delivery, an sRGB workflow with an embedded profile is a common compatibility choice when the editor offers it. Follow the destination's requirements.
Compare the final file again. Open it in a color-managed viewer and on the intended destination. Decide whether any remaining difference materially affects the portrait.
Avoid chasing one unverified screen
Changing a whole batch because it looks orange on one device can introduce a cast everywhere else. If only that screen disagrees, investigate it before revising the master edit.
Adobe's profile documentation distinguishes interpreting an existing profile from changing color-space handling. Do not randomly assign profiles until one looks pleasing. For demanding print or color-critical work, a managed and calibrated workflow is more appropriate than casual side-by-side guessing.
Common questions
Does embedding a profile guarantee a match?
No. The viewer must handle it appropriately, and screens differ in capability, settings, and condition.
Should I make separate edits for every phone?
Usually start with one well-managed master and a tested delivery file. Adapting to unverified screens can create inconsistent edits.
Why does only the exported image change?
Compare export conversion, profile, and dimensions with the working file in the same viewer before blaming the display.