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This article describes which data is collected by Firefox for Android, Firefox for iOS, Firefox Focus, Firefox Klar and Firefox Lite.

<!--German-speaking L10N, please reword all of "Firefox Focus" to "Firefox Klar. Do NOT mention Firefox Focus."--> The ''Send usage data'' control appears in the settings menu for many of Mozilla’s mobile products. This controls your sharing of crash, technical, testing, notifications and campaign measurement data. __TOC__ Below is a summary of what the “send usage data” control covers. Each product privacy notice describes the actual data collection, and for full transparency, you can view the source code repositories for Firefox for [https://github.com/mozilla-mobile/firefox-ios/blob/master/MMA.md iOS], [https://firefox-source-docs.mozilla.org/mobile/android/fennec/mma.html Android], [https://github.com/mozilla-mobile/firefox-tv FireTV], [https://github.com/mozilla-tw/Rocket Lite], [https://github.com/mozilla-mobile/focus-android Focus], Klar, [https://github.com/mozilla-tw/ScreenshotGo Firefox ScreenshotGo] and Firefox Reality. =Technical and interaction data= *Mozilla receives this to improve performance and stability. *This data is sent by default to Mozilla on Firefox for iOS, Firefox for Android, Firefox Focus, Firefox for FireTV, Firefox Lite, Firefox Reality and Firefox Preview. =Crash and error data= *Some of our mobile products use developer tools to evaluate the reason for crashes and improve performance and stability. *This data is sent to Mozilla by default on Firefox for iOS, Firefox Focus, Firefox for FireTV, Firefox Lite, Firefox ScreenshotGo, Firefox Reality and Firefox Preview **Firefox Lite and Firefox ScreenshotGo use Google Firebase, which also receives this data. [https://firebase.google.com/ Learn more]. =Feature testing and notification data= *Some of our mobile products use developer tools to track and test different features and experiences or provide customized notifications. *This data is sent by default to Mozilla on Firefox for iOS, Firefox for Android, Firefox ScreenshotGo, Firefox Lite and Firefox Preview **Firefox Lite and Firefox ScreenshotGo use Google Firebase, which also receives this data. [https://firebase.google.com/ Learn more]. Firefox Lite also categorizes screenshots and anonymizes and sends these aggregated categories to Mozilla to help us build better features such as Top Sites. [[Screenshot categories in Firefox Lite |Learn more]]. =Campaign measurement and data= *Some of our mobile products use tracking tools to measure and support our marketing. *This data is sent by default to Mozilla on Firefox for Android, Firefox ScreenshotGo, Firefox Lite and Firefox Preview. **These products use Adjust, which also receives this data. **Firefox Lite and Firefox ScreenshotGo uses Google Firebase, which also receives this data. [https://firebase.google.com/ Learn more]. =Frequently Asked Questions= ==Why do you enable data collection by default?== This helps us gain valuable insight into how our mobile products are performing so that we can improve those products. Data collection is turned off by default in Firefox Klar. If you enable it, we will only receive the technical and interaction data described above. ==Why do you use third-party platforms?== We use third-party platforms for functionality and services that we can’t build internally or when it is more efficient to use another service. Learn more about our use of [[How do you use Google Firebase in Firefox? | Firebase]] and [[How do you use Adjust in Firefox? | adjust GmbH]]. ==How do I turn off data collection and reporting?== You can turn off this collection and reporting in the Settings menu: ===Firefox for iOS=== #[[Template:iosmenu]] #[[Template:settingsios]] #Scroll down to the '''Support''' section and turn off {menu Send Usage Data} by sliding the toggle to the left (it will change from blue to white when it is disabled). ===Firefox for Android=== #[[Template:menupreview]] #Select {menu Settings}. #Select {menu Data collection} under the '''Privacy and Security''' section. #You will see different types of data collection: '''Usage and technical data''': When enabled this allows Mozilla to share performance, usage, hardware and customization data about your browser to help improve Firefox. '''Experiments''': When enabled this allows Mozilla to install and collect data for experimental features. You can turn off any of these collection types at any time by tapping the toggle to the left (it will change from purple to white when it is disabled). ''Older Versions of Firefox for Android:'' #Tap the menu button [[Template:AndroidMenuLocation]] followed by {menu Settings} [[Template:AndroidMore]]. #Tap on the ''Privacy'' section, scroll down and remove the check mark next to ''Firefox Health Report''. ===Firefox Focus and Firefox Klar=== #Tap the menu icon (the three dots) and then tap {menu Settings}. If you are in the browser, you may have to hit the ''trash'' icon first. #{for android}Tap '''Privacy & Security''', scroll down to the '''Data Choices''' section, and then turn the switch off next to ''Send usage data''.{/for}{for not android}Turn the switch off next to ''Send usage data''.{/for} ===Firefox Lite=== #[[Template:rocketmenu]] #Tap {button Settings}. #Tap the switch next to ''Send usage data'' to turn it on (blue) or off. ===Firefox for Fire TV=== #[[Template:firetvmenu]] #Scroll down to the ''Settings'' section and select {menu Send usage data}. #Turn the switch off for ''Send usage data''. ===Firefox Reality=== #Click the settings (cogwheel) button. #On the next screen, toggle the switch next to ''Telemetry'' or ''Crash Reporting'' to turn them off or on. Clear means it's not activated. ===Firefox ScreenshotGo=== #Tap the menu button (three dots) at the top of the screen. #Tap {menu Settings}. #Tap the switch next to ''Send usage data'' to turn it on (light green) or off.