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Get Flashlight 100Kb (No Ads) old version APK for Android
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The smallest flashlight app 100kb only
This app uses the built-in Camera LED as a flashlight. If your device does not have such a LED, it will try to use the screen as a substitute.
Disclaimer
This app is licenced under GNUv3 or later
Source : https://github.com/abitsinc/AB-ITS-Inc-Flashlight-Android