ADB is not detecting my android device on Ubuntu

Question

Need help, \"adb\" not detect my phone, I do not know what to do; and this was what I did, if I have a mistake or something tell me please.

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Answer 1

My phone thought it was connected to the computer, but the computer wouldn't recognize it. On my phone I tapped the notification for 'USB Debugging Enabled', scrolled to 'USB Debugging', and toggled the setting off and on again. adb then saw my phone.