Turning off your wifi on your Android (16) phone does NOT bring down your WLAN interface!
Commands run:
sudo ip link show > old.data
#Disable Wifi in settings
sudo ip link show > new data
diff old.data new.data
Here is the diff, it's not what i expected:
~/scrap $ diff old.data new.data
< 47: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
---
> 47: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000