Previously, high-speed data transmission via NFC protocol was known with Qualcomm devices, but now MediaTek introduces a similar technology called Hot Knot, available for Oppo phones. Currently, Oppo models supporting this feature include: Neo 3, Joy, and Yoyo.
How to Use Hot Knot Feature on Oppo Phones for Data Transfer Between 2 Devices
Step 1: On both Oppo phones, go to Settings > Additional Settings > check the box for 'Transfer Screen'.
Step 2: Navigate to the file you want to send, press and hold on the file, then select 'Share' > 'Hot Knot'.
Step 3: A notification will appear, instructing you to stack the two phones together.
Step 4: The receiving device will display a loading icon.
Using the Hot Knot feature on Oppo phones is similar to using Bluetooth and NFC. You can easily transfer, copy files between two Oppo devices by yourself.
https://Mytour.vn/cach-dung-chuc-nang-hot-knot-tren-dien-thoai-oppo-1820n.aspx
Image Source: Oppomobile
