I can’t see the “Install via USB” setting anywhere.
God , why is this always such a pain,
I’ve installed another unity build recently on my phone, why is it not working now?
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If you did manage to do a build at some point before on that device crazy enough… tried everything only thing that worked was deleting the installed app from the device entirely and trying again… random
I build something else on it, this app was never installed on it.
If anyone is still struggling this far into the thread, here is the quick solution. no need to do any of that environment stuff.
FREE UP SOME SPACE ON UR DEVICE!
it worked instantly for me after 3 days of trying to fix it.
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Also try delete spaces from your path to project. It’s work for me.
Uninstalling can help especially if you have different versions of your game. If certain app data is changed, the OS won’t allow you to install a similar yet different app. For instance, if you use a debug and official keystore to sign your app, the signatures will be different even though your app id is the same. The device will reject this, and the OP error is what you’ll see on the Unity side. Not having your usb connection type set to File transfer can also produce this error (devices usually default to charging, but may remember your computer if you have changed it to file transfer using it before).