@Marcopolo3154
Why don't you use WiFi Direct, more simple...just enable it on both devices in Parameters/WiFi/WiFi direct. Just select the files on the device and share it on the other device.
Read this for Wifi Direct on S10:
https://www.samsung.com/au/support/mobile-devices/connecting-devices-via-wifi-direct/
https://m.youtube.com/watch?v=RGhS8MdLVy8
For bluetooth connexion just check this, but not sure it works :
https://support.google.com/android/answer/9075925?hl=en
If it works don't forget to click on "Accept as solution" to help other people with same problem
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