Technician helping troubleshoot Motorola phone screen brightness not working

Steve H.

Reviewed for technical accuracy

Specialities: Samsung Galaxy camera flash not working, flashlight/torch greyed out, “Camera in use” message, flash not firing in Camera app, flash icon missing after update.

Samsung camera flash not working? Common reasons + safe checks (camera in use, battery saver, overheating, permissions, after update)

Technician avatar Technician
Hi — I can help. When a Samsung phone camera flash isn’t working, it’s stressful because you can’t take photos indoors and the flashlight/torch may stop too.

We’ll do this in a calm, low-risk order. Trust moment: I don’t want you tapping random “reset” options or installing repair apps that could make things worse or confuse your settings.

Quick questions so I understand what you’re seeing:
• Is the problem only in the Camera app (flash doesn’t fire), or is the torch/flashlight also not working from Quick Settings?
• Do you see any message like “Camera in use” or flash not available?
• What Samsung model is it (Galaxy A / S / Note / Fold), and did this start after a One UI / Android update?
Customer
It’s a Galaxy A. I’m a bit nervous — the flashlight button is grey sometimes and the camera flash doesn’t go off. I noticed it today.
Technician avatar Technician
You’re not alone — this is a common “panic search” problem, and many causes are temporary.

First, the safest checks that don’t change anything important:
1) Is your phone hot (charging, in the sun, under a pillow)? Overheating can disable camera flash for safety.
2) Is Battery saver / Power saving on? Some modes limit camera/flash behavior.
3) Are you using any third-party camera app, flashlight app, or a video call app that may be holding the camera open?

Also: does the torch say “Camera in use” when it’s grey?
Customer
It does say something like “camera in use” sometimes. I do video calls. And yes, I keep it on power saving a lot.
Technician avatar Technician
That “camera in use” clue is important. It usually means another app is still using the camera, so the phone won’t allow the flashlight/torch or the camera flash to turn on.

Trust moment: I don’t want you force-stopping lots of apps at random. We’ll do the least risky things first.

Safe checks (simple, and you can stop anytime):
• Close the Camera app completely and close any active video call app.
• Wait 20–30 seconds, then try the torch again.
• If your phone feels warm, unplug it and let it cool for a few minutes before testing flash again.
Customer
I closed things. It came back once, then grey again. I’m worried it’s broken. I didn’t drop it today.
Technician avatar Technician
If it works sometimes, that often points to a software hold (an app using the camera), a power/heat limit, or a camera app glitch — not immediately a hardware failure.

Two gentle “where does it fail?” checks:
• In the Samsung Camera app, is the flash set to On or Auto (not Off)? Sometimes the flash icon is easy to miss.
• Does flash fail in every camera mode, or only one (like Video or Portrait)?

If you also ever see a black camera preview, this related guide can help you spot patterns: Android phone camera shows black screen – easy help for seniors.
Customer
The flash is set to Auto. Still no flash when I take the picture. The torch works sometimes but not always. It started after an update last week, I think.
Technician avatar Technician
After an update, it’s common for phones to run background tasks for a day or two, and sometimes the Camera app can behave oddly until it settles.

The safest next step is a normal restart at a calm time (not while the phone is installing an update, and with enough battery). A restart can release the camera/flash if an app got “stuck.”

If you’re concerned about losing anything: a restart does not erase photos. For general “safe first” steps when a phone acts strangely after an update, this is useful: Android phone consent screen confusing – simple fix.
Customer
I can restart, yes. But if it comes back, what else can I check without messing things up?
Technician avatar Technician
Great question — and your caution is exactly right.

Next, we do one “is it an app?” test that is very safe: Safe Mode. In Safe Mode, downloaded apps are temporarily disabled, so we can see if a third-party app is grabbing the camera in the background.

We don’t need to change lots of settings. We simply observe:
• If the torch and camera flash behave normally in Safe Mode, an installed app is likely involved.
• If it still fails in Safe Mode, we focus more on Camera app health, permissions, heat, and possible hardware signs.
Customer
I installed a flashlight app a while back. Could that do it? Also sometimes the camera says it can’t open.
Technician avatar Technician
Yes — some flashlight apps (and camera apps) can keep a “camera service” running, which leads to the torch being greyed out or the Camera app acting like it’s busy.

If you ever see “can’t open camera” or “camera failed,” that’s a strong reason to do safe, basic Camera app health checks (again, no risky resets). Samsung’s Camera troubleshooting page is the best reference — I’ll include it in Sources.

Also, if your phone has been charging slowly or getting warm, that can affect flash behavior too: Android phone charging very slowly – what to do next.
Customer
I’m not very technical. I just need to know what to check first today. And I don’t want to pay a shop unless it’s really needed.
Technician avatar Technician
Absolutely — we’ll keep it simple and safe.

Today’s safest order:
• Make sure the phone is cool (no heavy charging heat), then test the torch and camera flash again.
• Turn off Power saving for a short test, then turn it back on if you prefer it (one change, then test).
• Restart once to release anything stuck using the camera.
• If it’s still inconsistent, do a Safe Mode observation to see if a flashlight app or another app is interfering.

For seniors, I also like having a “plan B” light option while we test, so you’re not stuck in the dark: Android phone battery not charging – easy help for seniors (it includes gentle power tips that keep the phone stable during troubleshooting).
Customer
How do I know if it’s hardware? Like the flash LED is dead?
Technician avatar Technician
Good question — and you’re right not to guess.

Hardware becomes more likely if you notice any of these patterns:
• The torch and camera flash never work, even after a restart, even when the phone is cool, and even in Safe Mode.
• The camera frequently shows errors like “Camera failed,” and multiple camera-using apps can’t access the camera.
• There was a recent drop, bend, or liquid exposure (even if the phone seemed fine afterward).

If the flash works sometimes, or changes based on apps/power saver/heat, it’s often a software hold or setting — and we can usually confirm that safely before you spend money.
Customer
That makes sense. If it turns out to be an app, do I have to delete everything?
Technician avatar Technician
Not at all. If Safe Mode suggests an app conflict, we handle it gently: we identify the most likely recent apps (flashlight apps, camera filters, video call apps), then adjust one thing at a time.

Trust moment: I don’t want you deleting photos, clearing random data, or doing a factory reset for a flash problem unless a true expert tells you it’s necessary.

If you’d like, tell me the last 2–3 apps you installed (especially anything labeled “flashlight,” “camera,” “cleaner,” or “battery”), and we’ll decide what’s safest to test first.
Customer
Okay. One last thing — could this be just a setting or permission?
Technician avatar Technician
Yes — settings and permissions can matter, especially after updates or if a new app requested camera access.

The safe approach is to review (not change) two things first:
• Camera permission for the Samsung Camera app (and any flashlight app you installed).
• Whether an accessibility or “display over other apps” setting was enabled by a third-party app (those can cause camera conflicts).

If you tell me whether your torch is greyed out only sometimes or almost always, I can point you to the single safest place to look first — without a long settings hunt.

Quick answer: the accepted fix

Accepted first fix for a Samsung phone camera flash not working: focus on safe isolation, not guessing.

What usually helps most:
• Check the simplest blockers first: the phone isn’t overheating, and Power saving is off briefly for a test (then turn it back on).
• Close camera-using apps (video calls, third-party camera/flashlight apps) so the torch isn’t stuck on “Camera in use”.
• Restart once at a calm time to release a stuck camera/flash service (this does not erase photos).
• If it still comes and goes, use Safe Mode to see whether a downloaded app is interfering with the camera flash/torch.
• If the flash never works even when cool, restarted, and in Safe Mode — use Samsung’s camera troubleshooting and consider professional evaluation.


Why a Samsung camera flash stops working (and why it can start suddenly)

A Samsung camera flash can stop working suddenly for reasons that are not permanent: the phone is too warm, Power saving is limiting features, or another app is holding the camera so the torch shows “camera in use.” After a One UI or Android update, background tasks and camera services can act “busy” for a while, and the flash may not fire reliably. Third-party flashlight or camera apps can also cause conflicts, especially if they run in the background. The safest approach is to confirm whether it’s an app hold, a power/heat limit, or a camera app issue before making bigger changes.

What to check first: camera setting, torch greyed out, or a hardware problem?

Start with simple comparisons: does the torch/flashlight work from Quick Settings? If the torch is greyed out or says “camera in use,” an app conflict is likely. If the torch works but the camera flash doesn’t fire, check that flash is set to Auto/On and test a different camera mode. If neither torch nor flash works even after a restart, when the phone is cool, and in Safe Mode, hardware becomes more likely. If you’re seeing broader camera trouble, this related guide may help you notice patterns without changing settings: Android phone camera shows black screen – simple explanation.

Samsung camera flash not working — gentle troubleshooting tips

Most flash/torch issues come from heat, power saving limits, or “camera in use” app conflicts after updates.

Best approach: let the phone cool if it’s warm, test briefly with Power saving off, close camera-using apps, and restart once. If the problem continues, Safe Mode helps confirm whether a downloaded flashlight/camera app is interfering. Avoid changing many things at once — one small check at a time keeps you in control and makes the cause easier to identify.

Disclaimer: This information is AI-generated and intended for general guidance only. Avoid making multiple system changes at once. For device-specific steps, consult a verified expert on Whizz-Tech or the manufacturer’s support before making decisions.

Additional troubleshooting options


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FAQ

Why did my Samsung camera flash stop working suddenly?

Sudden flash problems are often caused by heat, Power saving limits, or another app holding the camera so the torch shows “camera in use.” After an update, the Camera service may behave inconsistently for a short time. If the torch is greyed out only sometimes, that usually points to an app conflict rather than a broken LED. If it never works in any situation, hardware becomes more likely.

My Samsung flash stopped working after an update — is that common?

It can happen. Updates can trigger background tasks and small camera service glitches, and some settings may behave differently afterward. The safest first step is a normal restart and a short test with Power saving off. If it keeps happening, Safe Mode can help confirm whether a downloaded app is involved.

How can I tell if it’s hardware or just settings/apps?

If the flash and torch never work when the phone is cool, after a restart, and in Safe Mode, hardware is more likely. If it changes depending on apps (video calls, camera apps, flashlight apps), it’s often an app holding the camera. If you see “camera failed” errors across multiple apps, that also points to a deeper camera issue. The safest method is to test one factor at a time instead of changing many settings.

Can this be fixed without a service center?

Often, yes. Many cases improve by cooling the phone, closing camera-using apps, restarting once, and testing in Safe Mode. If the issue started after installing a flashlight app, that’s a strong clue you can resolve it without repair. Service is more appropriate if the flash never works in Safe Mode and the phone shows repeated camera errors. When in doubt, use Samsung’s official camera troubleshooting as your reference.

Sources

Filed under: Camera Issues

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