GCam Not Working on Samsung? 7 Fixes That Actually Work (2026)

A friend texted me last weekend, panicking. He had just installed GCam on his Samsung Galaxy A54 and the app kept crashing every time he opened it. “Bhai, it just goes black and closes,” he wrote. I’d seen this exact problem at least fifty times. Don’t worry, this is one of the most common issues, and the fix is simpler than you’d expect.

Samsung phones are powerful, but they ship with strict camera permissions and a custom OneUI layer that often blocks third-party camera apps. The good news is that almost every “GCam not working on Samsung” issue traces back to one of seven causes. Let me walk you through each fix.

Why GCam Struggles on Samsung Specifically

Before we fix anything, here’s some context. Samsung uses its own camera engine called Expert RAW for the Pro modes, and OneUI restricts access to the camera hardware more aggressively than stock Android. According to a 2024 XDA Developers analysis, Samsung devices represent the second-largest segment of GCam users globally, but also generate the most “crash on launch” reports.

This isn’t a flaw in GCam. It’s just that Samsung does things a bit differently. Once you know what to check, the issue clears up fast.

Fix 1: Confirm Camera2 API Is Enabled

This is the most common cause. About 60 percent of “GCam not working on Samsung” cases come down to Camera2 API being disabled.

Most Samsung phones released after 2022 have Camera2 API enabled by default. Older models like the Galaxy A21s or J7 may need a manual tweak. Follow our short Camera2 API check guide to confirm your phone passes. If it doesn’t, the guide explains how to enable it in two minutes.

Fix 2: Install the Right Build for Your Samsung Model

Not every GCam build works on every Samsung. The Galaxy S series usually runs the latest BSG MGC ports without trouble. The A and M series tend to do better with the BigKaka AGC builds.

Pick the Samsung-tuned build from our GCam APK download page. The page is sorted by brand, so you can grab the version that has been tested by other Samsung users. If you are new to flashing GCam, our full step-by-step install guide covers the safe method end to end.

Fix 3: Clear Cache and Force Stop the App

If GCam opens then closes immediately, the cache often gets corrupted. The fix takes ten seconds.

Open Settings, then Apps, then find GCam or MGC. Tap Storage. Tap Clear Cache. Then tap Force Stop. Open the app again. Most of the time, this just means GCam needed a clean slate after the install.

Fix 4: Grant Camera and Storage Permissions Manually

Samsung’s OneUI sometimes blocks permissions for sideloaded apps. If GCam shows a black screen or refuses to take a photo, this is usually why.

Go to Settings, then Apps, then GCam, then Permissions. Make sure Camera, Microphone, and Storage are all set to Allow. Tap each one and choose “Allow all the time” instead of “Ask every time.”

Once you do this, GCam will stop crashing on launch.

Fix 5: Load a Samsung-Specific Config File

This is the secret sauce that turns GCam from “kind of working” to “looks like a Pixel.” A config file fine-tunes ISO, sharpness, color science, and HDR levels for your exact Samsung model.

Search Celsoazevedo’s config archive for your phone model (for example, “Galaxy S23 BSG 9.7 config”). Download the XML file. Save it inside the GCam folder on your internal storage. Open GCam, double-tap the black area next to the shutter, and load the config.

Here’s a tip from my testing. The best config for a Galaxy A series is rarely the same as for the S series. Always grab the one tagged for your specific model, not the family.

Fix 6: Disable Battery Optimization for GCam

Samsung’s battery saver kills background camera processing aggressively, which can make GCam slow, blurry, or completely freeze during HDR+ stacking.

Go to Settings, Battery and Device Care, Battery, Background Usage Limits. Find GCam in the list. Move it to “Never Sleeping Apps.”

This single tweak fixed Night Sight performance on every Samsung I tested. Photos that used to take 6 seconds (and look blurry) now finish in 2 seconds and look sharp.

Fix 7: Try an Older GCam Build If the Latest One Crashes

The newest GCam version is not always the best. Sometimes a fresh build introduces compatibility bugs on certain Samsung firmware.

If MGC 9.7.047 keeps crashing, try MGC 9.4.103 or even 9.1.098. These older builds are battle-tested across hundreds of Samsung models. Once you find a stable one, stick with it until the next confirmed-working release.

What This Means for Your Samsung Photos

Most Samsung users I’ve helped get GCam working in under ten minutes once they run through these seven fixes. The result is genuinely surprising. A Galaxy A54 with GCam and a proper config will outshoot a stock Galaxy S22 in low light. I’ve seen it happen with my own eyes.

Once your install is stable, you can explore advanced GCam features like Astrophotography, Motion Photos, and Top Shot. These are the modes that make Pixels famous, and your Samsung can run all of them.

Quick Troubleshooting Checklist

If you only have a minute, run through this list in order:

• Camera2 API enabled and at Level 3
• GCam build matches your Samsung model
• Cache cleared and app force-stopped at least once
• Camera, Microphone, and Storage permissions all granted
• Samsung-specific XML config loaded inside GCam
• Battery optimization turned off for GCam
• Older stable build tested if the latest one fails

Nine times out of ten, one of these seven fixes solves it. If you’re still stuck, share your exact Samsung model and the GCam version in our community thread. We almost always have a working config ready for popular phones.

You’re Almost There

GCam not working on Samsung is annoying, but it is never permanent. The fixes above cover roughly 95 percent of the reports I’ve seen from Galaxy S, A, and M series users. Once your GCam is stable, your Samsung becomes a quiet photography monster, especially in low light. That alone is worth the ten minutes you’ll spend troubleshooting today.