My Samsung Galaxy S has stopped connecting to WiFi. It appears to have "lost" its MAC address.
This has not solved the problem. When I switch on WiFi on the phone, it scans for networks but then gives a message that it cannot scan for networks and turns WiFi off. As I said, it does not appear to have a MAC address. It cannot find any network, let alone mine.
Let me know if you have one, or if its all zeros. All zeros is a much more serious issue.
That is actually fine. It should say unavailable, its just all zeros that could indicate a hardware problem.
We can try two things
First try this:
Now try and connect to WiFi again.
If that doesn't work, then the last real way to resolve this, is to do a factory reset on the phone. Whatever system files are corrupted, causing your WiFi to fail, will be replaced in a factory reset.
Re-booting. MAC address still "unavailable" so it looks like a factory re-set. Just done it. I hate to think what I have lost!
Open your settings, choose privacy, then choose wipe data/factory reset.
Remember, this will wipe any data that is not on the SD card
If this doesn't work, for any odd reason, then there is an issue with your radio physically, and you will more than likely need a replacement. Good news is that it shouldn't cost you anything at all.
As long as you have a Google account synced to your device, your contacts, calendar, etc. will be re-synced to the device after you run the initial set up again.
As far as any data that is stored on the SD Card (images, music, etc.), it will not be erased. Only the phone's internal memory is formatted.
Open the Market app, press the menu button on your phone and tap on "my apps". That way you can easily install the apps you had before.
Glad it worked!!