Firstly, make sure that your Galaxy Note 10 plus is updated to latest firmware and having One UI 2.1.Then while recording video, there will be a camera switcher.Just click on it and it will switch the camera.*Note : This features is only available in...

Samsung Galaxy Note 10 plus

Install Samsung's Sound Assistant app from galaxy store or play store.It will help you assign your volume up and volume down keys as next track and previous track respectively.

my note 10 plus is also on 1 December 2019 security patchand yes, i have android 10 with One UI 2...I don't know why I'm not getting any security updates.

For camera to have instagram mode, you must first install instagram in your mobile phone.And you should also make sure that your mobile is updated to latest firmware.