The number displayed to the left of the Wi-Fi® icon refers to the Wi-Fi® standard of the current connection:
- 4 represents Wi-Fi 4: The current connection is using 802.11n technology
- 5 represents Wi-Fi 5: The current connection is using 802.11ac technology
- 6 represents Wi-Fi 6: The current connection is using 802.11ax technology
Note: Sony has decided to remove support for Wi-Fi generation icons which is the number displayed left bottom of the Wi-Fi icon, from its Android 13.