I would like to extend a WiFi signal. I could buy a WiFi repeater, but a much cheaper solution would be using an older Android 4 device, which I own and don't use. The Android device is capable of creating a WiFi AP. So if I bought an external WiFi USB adapter for it, with a large antenna used as the receiver and the Android device itself as the AP, I could bridge the network.
The hardware should be possible. But how about the Android software? Will there be any issues, or any considerations I need to take note of?