Hey my song ericsson w700i is not starting, when I power it on, it start and the sony ericsson symbol appears but then a white blank screen keeps appearing and disappearing.

SOURCE: Blank Screen - Sony Ericsson Z525a

The fix for the Ericsson z520/z525 White Screen of Death (WSOD) is to buy a new flex cable and replace it. You can get one off eBay for like $10 after shipping.

Taking apart your phone can be a little tricky. You'll need a T6 Torx bit and a little courage. You can use this site as a start. After that, a pair of tweezers and a few photographs to get you back where you started is all you need. I can post a couple pics I took, if there's interest.

Note this only fixes the WSOD case where the phone still can make and receive calls, you just can't see anything on either screen.

SOURCE: default security code for sony ericsson w700i

it is 1234

SOURCE: schematic w700i

i need schematic diagram of w700i

SOURCE: my sony ericsson phone keeps

its very easy tis is the problem comes because of the excissive memory which is in the stick or you are operation the things at buzz speed , for to avoid these problems just master reset every two days ....

SOURCE: blank screen

Can't fix your phone, but can help you save your contacts to your SIM so you can put them on a new phone.

To save contacts on a z310a that has a broken screen, do the following: 1.From standby, (make sure the backlight is lit up) press the center button once 2. Press down once to go to address book 3. Press center button to enter address book 4. Press RIGHT select button (upper right button with line through it) to select options. 5. Press down FIVE (5) times to go to Advanced 6. Press center button to go into Advanced 7. Press down FIVE (5) times to go to "Copy To SmartChip" 8. Press LEFT select button to enter 9. Press LEFT select button to select "Copy All" 10. Press LEFT select button to confirm. Wait a couple of minutes to make sure all your contacts were transferred.