Participating Frequently

Question

Subject detection works miserably recently

Forum|Forum|1 month ago
June 20, 2026
36 replies
152 views

My mobile LR's subject detection fails to work since few days ago, probably starting from last update. It does not even work on simple portraits (see attached, emoji and rectangle drawn on screenshot only).

aaron.hkgAuthor

Participating Frequently

I have reported the same issue around 1 month ago. Issue has NOT been fixed and I haven't received updates from the supports for more than a week already.

PS. It seems to be a compatibility issue with certain Android devices (myself using Samsung A55).

Claire H.

Community Manager

Hi @aaron.hkg, Thank you for letting us know. We are still trying to reproduce this issue internally and create a fix. Please continue sending the diagnostic log and sample media as we continue investigating. https://helpx.adobe.com/lightroom/mobile/get-started/generate-and-share-diagnostic-logs.html. Thank you for the assistance so far! I hope we can figure this out soon. ^CH

selondon

Community Expert

That seems very strange. I took the liberty of screengrabbing your grabs and taking them into my Lightroom Mobile.

I am using an iPhone 16Pro on the latest OS. Both Select Subject as expected.

How did the photos get into Lightroom Mobile?

Imported, taken with the device camera or synced from Lightroom Classic?

Checking the app and OS are up to date is a start. Also have you tried reinstalling the app (making sure any syncing to the cloud has completed first)?

Maybe a member of the team or another Android user will comment if they experiencing the same issue.

D

Driven_photography

Participant

I transfer the photos via an adapter that plugs into my charging port.I import them to a sd card and from there I do my culling and import them to LR mobile,and everything is up to date only thing I haven't tried is uninstalling and re installing

D

Driven_photography

Participant

I've been using Lr mobile for about 5 years now,and just recently the auto select on masks has been buggy,it'll select random spots of the photo or just say no subject found(some examples below) Im on a Samsung A55 with 8gb ram

aaron.hkgAuthor

Participating Frequently

@Sameer K @Claire H. @Srishti Bali Please continue to support! Much is appreciated!

P

pranavakkala

Participant

I have the same issue and it has started after the latest update. I am unable to fix this by clearing the cache or completely clearing the storage either.

J

Jysn_Tndn

Participating Frequently

I've already cleared the cache and cookies, reinstalled the app, and updated to the latest version (v11.4.5). I also uninstalled Snapseed and tried running the subject detection in airplane mode, on mobile data, and over Wi-Fi. Still, it isn't detecting the subject.

P

pranavakkala

Participant

Yeah. I went through all that as well and nothing changed. Can't detect subject.

J

Jysn_Tndn

Participating Frequently

I updated the app today, v11.4.5 and tried using the subject detection feature, but it still failed to detect the subject. Please see the attached screenshots.

Claire H.

Community Manager

@Jysn_Tndn, thank you so much for sharing your information! Would you mind sharing your OS information and a sample media file that isn't working for you? Are all images or just particular images? This will really help us try to recreate this issue and fix it. Thanks! ^CH

J

Jysn_Tndn

Participating Frequently

-For my phone's OS see attached photo.

-it doesnt detect to all images even if the subject is quite obvious.

aaron.hkgAuthor

Participating Frequently

I didn't mean to finish the report, just pressed the wrong button resulting "correct answer" and there seems no way backward. The issue still persists.

Claire H.

Community Manager

@aaron.hkg, Not a problem! The Correct Answer has been removed. Would you be able to send sample media as well as images that are not working for you? ^CH

J

Jysn_Tndn

Participating Frequently

My phone is a Samsung A55. Everything was fine until recently; now, when I edit a photo and use the subject detection feature, Adobe Lightroom Mobile detects everything but the subject. I've already cleared the app's cache and updated it, but that didn't work. I even uninstalled and reinstalled the app, and it still didn't fix the issue. It's really frustrating.

Claire H.

Community Manager

HI @Jysn_Tndn, thanks for sharing all the steps you’ve taken to try to fix this issue. Would you be able to send which version of Lr you are using on your phone, OS version, and a screen recording of what you’re seeing? That would be very helpful in replicating and fixing the issue. Thanks for your patience! ^CH

J

Jysn_Tndn

Participating Frequently

I have attached three photos here: my Lightroom version, my phone's OS details, and a sample of the subject detection error. As you can see, it completely missed the subject (the cat) and instead randomly selected something in the upper left-hand corner of the photo.

Regarding my phone's OS: I actually started experiencing this subject detection issue about two weeks before I even updated the operating system. I have also tried running the subject detection in Airplane Mode as well as over Cellular Data, but it still fails to detect the subject.

I can't upload a video directly here, so I have uploaded a screen recording to Google Drive. You can access it via the link below:

https://drive.google.com/file/d/1DjZQqYAKsWOy7JV4WrxJX_1WxqEJCcEw/view?usp=drivesdk

JohanElzenga

Community Expert

You need to give more information about your system. Go to Help - System Info in Lightroom and post that here. The most common cause of problems like this are (on Windows computers) outdated GPU drivers.

-- Johan W. Elzenga

J

Jysn_Tndn

Participating Frequently

Hi, thanks for the reply. Im using lightroom mobile. Samsung A55. Didnt have the problem until recently. I already cleared the Cached. The app is updated too.

J

Jysn_Tndn

Participating Frequently

I put a picture with an obvious subject, a person. And light doesnt detect it.

V

Vero

Participant

Desde que lo he actualizado la IA no encuentra SUJETO cuando es fácilmente identificable e interpreta que el fondo es TODA LA IMAGEN (SUJETO Y FONDO)

Claire H.

Community Manager

HI @Vero, thanks for reaching out! Could you share a screenshot or a short screen recording demonstrating the issue? Along with example pictures? Also, can you send your system info? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here. Thanks! ^CH

J

Jysn_Tndn

Participating Frequently

I have attached three photos here: my Lightroom version, my phone's OS details, and a sample of the subject detection error. As you can see, it completely missed the subject (the cat) and instead randomly selected something in the upper left-hand corner of the photo.

Regarding my phone's OS: I actually started experiencing this subject detection issue about two weeks before I even updated the operating system. I have also tried running the subject detection in Airplane Mode as well as over Cellular Data, but it still fails to detect the subject..

Screen recording

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