view/transfer files android/android

Hi,

I have two androids. In one i have teamviewer remote desktop and in the other i have teamviewer host and teamviewer quick support.

i wold like send files between devices

With neither of both i can see the files of the android device. It always tells me that on that device you can not see the i files and i should open teamviewer remote desktop
What I have to do?

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