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Hi,
I have Sony Ericsson W550i mobile. I don't know what went fuzzy and after switching it off then on, it only displays a blank white screen. I can only see white light not else I can do with it. I'm not sure what the actual fault is but nothing had happened to the phone prior to the incident to suggest any cause. If not, what damage is the display light flashing on and off a symptom of?
I had this same problem of white screen with Sony Ericsson W750i. In fact, I think what causes a blank screen is that the screen is getting power but the cable that sends the phone's display to the screen is faulty and weak, so even a little abuse can ruin everything. The reason I think it's because after flipping my w300i open and closed a couple of times after receiving the WSOD I get to see the interface. While in the WSOD, hearing the speaker phone did not work. Also, I was able to dial numbers and people call and hears only the speaker but timed and press the speaker button.
To solve the problem, you need flash your w550i or unlock via cable etc so that the phone is restored to factoy settings.
To fix your white light screen problem, here are the steps:
1. Go to this link and download the necessary software. from here - Sony Ericsson
2. The software load, allow it to do all updates, etc.
3. While the software is updated to connect your phone and install the necessary USB drivers if necessary.
4. Once software updates are done, follow the steps in the software.