
Method 2: Force Close or Clear the Cache and Data- Destiny 2
The destiny 2 companion app not working might just be a temporary glitch. To fix it, you only have to force close the app and relaunch it again. To do so, go to Settings on your Android device, then go to Apps.
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For iOS devices, just clear the app from the RAM and launch it again. Go to settings to check for additional settings to force close the Destiny 2 Companion app.

On the applications settings, scroll down the applications list and search for Destiny 2, click on it, and on the next page, click on the Force Stop button, Confirm, and the app will be closed.

Now, simply launch the app by clicking on the Destiny 2 icon on your Smartphone, and the error might be resolved by now. However, if that doesn’t work, you might want to clear the App Cache and Data.
Therefore, on your Android phone, go to Settings>Applications/ Application Manager. Now, search for Destiny 2, click on it, then on the Destiny 2 App info page, click on the Storage option.

Click on the Clear Data and Clear Cache button to clear Destiny 2 cache and data. Then simply launch the app and check whether the issue has been solved or not.
Method 3: Re-logging into Destiny 2
Terms of Conditions might have been changed by Bungie Inc if you haven’t accepted the new TOC. This might cause the Destiny 2 companion not working issue.
However, to fix it, you must log out and log back into your account then accept the TOC prompt.
Open up the Destiny 2 Companion app on your iOS or Android, then click on the More tab below. From the menu, click on the Settings option, then scroll down and click on the Sign out button.

If this also doesn’t work, then try combining the previous method to clear the cache and login to Destiny 2. Or you can also update the app, then log out and log back in, try different combinations if any works or not.
Method 4: Reinstalling Destiny 2
If the Destiny 2 Companion app files have been corrupted due to some reason, the app will stop working. To fix it, reinstalling the app is your best bet.
On your iOS device, simply press-hold the app icon for a few seconds, then click on the x icon and uninstall the app.
Then you can download the app again from the App Store. This should fix the Destiny 2 companion app no working issue.
However, for Android devices, you can go to Settings>pplications> Destiny 2 and then click on the Uninstall button.

Also, you can press the Destiny 2 icon for a few seconds and then select uninstall from the prompt. After that, download the app again, go to Google Play, search for Destiny 2 companion app, and Install it.
Method 5: Reset your iOS or Android Device to Factory Defaults
If none of these above solutions works for you, then the last thing you can try is to reset your iOS or Android device settings to Factory defaults.
However, it is not advisable to do so. Even if you do so, make sure you have taken a backup.
To reset your phone settings for iOS and Android, you can probably easily find that option in the System Settings. If resetting your smartphone doesn’t work, either try using anther wi-fi connections and networks.
Conclusion
If the Destiny 2 companion app is not working on your iOS or Android device, then the first thing you can try is to try connecting to different networks and see if it works. You can also open up your browser and check if the Destiny 2 server is down.
Moreover, go to Google Play Store or App Store and check if there is an update available for Destiny 2. If there is an update, then update the app, clear the app from RAM and run it again.
If the issue is due to internal file damage, then you must uninstall the app from your iOS or Android device. Then install the app again from the Google Play Store or App Store. It should fix the issue. Lastly, if nothing works, try resetting your smartphone settings to Factory defaults.
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