Sony Ericsson Z520A Cant get a signal

you can contact the mobile service provider...

cetainly the problem should be with the charger or the battery of the phone

Hi,
you can get the unlock code here http://www.onlinegsmunlock.com/ ..It provides unlock code and instructios...By using this u can unlock ur mobile easily...

Sound like the display is going up or poor contacts on it. Try applying pressure to it by squeezing the phone firmly and try twisting it at the same time (not too hard, you don't wont to break it in half). Does the keypad still light up? If so this is most likely a display issue and the phone will need to be replaced (repair may be possible if your carrier has a Tech repair department). Phone repair is not for the faint of heart, there are a lot of really small parts in there! If you cant get it fixed I suggest upgrading if your contract is almost up or eBay (if you have a SIM type phone). That's why I love the SIM; I am not tied to one handset

Hai
i have one solution. The default code for sony erocsson is 0000 just try it
Sree

GET A NEW SIM CARD WITH A WARRANTY CARD! SHEEESH!!!!!!!

You need the sim card that's the same as the cell phones provider in order for it to work

Bring it to a dealer. They'll deal with it within minutes.

reset ur ohone than try

I am having this problem as well. A repair guy told me its probably the antenna's connections to the circuit board, but he couldn't fix it. I'm searching for a solution...