Enabling WiFi with a USB WiFi adapter

All Replicant-supported devices need non-free firmware to be loaded to make the internal WiFi work. See the WiFi research page for more information. Free replacements for the non-free firmware do not yet exist.

free firmware for adapters with AR9271 chipset

OTG-cable needed

Supported WiFi adapters

link to some external resources that explain how the chipset can be identified on a GNU/Linux system

link to useful online hardware databases

Known to work

Should work but not tested

Using the WiFi adapter with the RepWifi app

preferred

Using the WiFi adapter with the WiFi scripts

Known issues

high battery drain, possible battery damage or shortened lifecycle for batteries

adapter is not powered when low battery charge

Displayed battery charge level may not be accurate (likely lower because of quick drain)

which devices work best? Note 2 (big battery) -> Galaxy S 3 -> Galaxy S 2 (instabilities, battery issues)

Known issues for USB networking apply here, too.