I tried the debug tool, but it just doesn't work without the internet :(( any suggestion? one more thing is that if I turn on the airplane mode using the switch on the left side, both bluetooth and wifi will stop working. If I turn the switch back on, only bluetooth can be activated, Wifi stays off.
P/s: I only tried the codes that you gave above, nothing happened. Actually the wifi has been on for 1s, then it's off automatically again. There might be some problems with the searching-for-Network function.