You will find websites offering “TL-WN722N driver APK.” These are scams. Android does not allow kernel drivers to be installed from user space without root. At best, these apps install a useless configuration file; at worst, they contain malware.

| Method | Difficulty | Success Rate | Notes | |--------|------------|--------------|-------| | Stock Android (no root) | Impossible | 0% | No driver support; OTG will recognize only storage/HID devices | | Root + insmod | Very High | Low (v1 only) | Requires compiling kernel modules for exact Android kernel version | | Custom ROM (e.g., LineageOS) + custom kernel | High | Medium (v1) | Must manually add ath9k_htc and firmware | | Android on Raspberry Pi (e.g., LineageOS for RPi) | Moderate | High | RPi kernels often include ath9k_htc by default | | Nethunter (Kali NetHunter for Android) | Moderate | High (v1) | NetHunter includes external Wi-Fi adapter drivers & tools |

To understand the driver issue, you need to understand Android’s architecture:

The adapter appears as wlan1 or eth0. Check with:

ip link show

Bring it up:

ip link set wlan1 up

Once booted with the right kernel, load the module (root required):

su
insmod /system/lib/modules/ath9k_htc.ko

Or if built-in, plugging the adapter should trigger dmesg:

usb 1-1: ath9k_htc: Firmware - htc_9271.fw loaded