Oppo
Enable or Disable Android Beam auf Oppo
Android Beam lets two NFC-enabled phones exchange contacts, links, or small files by holding them close together. On Oppo phones running Coloros, the switch for this sits inside the wireless connection settings, separate from the main NFC toggle.
If a transfer fails, the usual reason is that Android Beam itself is off, even though NFC is active. Both phones need the feature enabled at the same time, because Beam only works between two devices that support it.
To check or change the setting, go to Open the Settings ➔ Tap on Other Wireless Connections ➔ Tap on Android Beam ➔ Enable or Disable Android Beam. Confirm the switch is set the way you need before testing the transfer again.
Android Beam has been removed from many recent Android builds in favor of newer sharing tools. If the option no longer appears on your device, look for a general nearby-sharing feature instead, since Beam may not be supported anymore on the installed Coloros version.