I can only see blank screen on my k800i, cant even turn it off unless take the battery off

you can put off a batery..and try again.....
if it doesn't work you can clean sim

ok so you are saying your battery is ok.Then it could be your charger or phone that is the problem.You are best going to a suppliers shop where you can try another charger.If battery and charger are ok then it must be the phone, and ask for a replacement.

Hope it helps!

were you trying to unlock or jailbreak it ? be that as it may remove the battery for about 10 minutes and then try and turn on the phone again. should work unless the error occured while you were doing either of those two things

Hi there. You can get all of the information you need for the sony ericsson z310a at t his link:

http://www.comparecellular.com/user_guides_guide.asp?l=&UserGuideID=1125

hi thanks for using fixya!!

Is the problem is you cannot turn on your phone? try to remove the battery and install the battery back again, they try to turn on the power, if doesn't open, try to recharge it, if the recharging is not responding, perhaps the problem is with your battery or charger.

I suggest that you bring your phone to the service center.

If you need further assistance, let me know.

pls rate me positively! thanks!

White Screen Of Death. Quite common on Sony Ericsson phones. My K800i does it every time its battery shuts off while it's on (so I try to make sure it doesn't). You need to (google terms) reflash sony ericsson phone Maybe also first backup GDFS The photos, except those on the memory card, and other stuff will be lost, I'm afraid. But good news is that your contact list can likely be saved by backing up the GDFS.

Remove the keep the battery out for 5 mins. Press the power button for 30 seconds without the battery to drain any charge on the main hardware.

Reseat the battery and turn on the phone.

Hi,

You can try to update the firmware of your phone.

http://www.sonyericsson.com/cws/support/products/updateservice/k800i?cc=il&lc=en

Loose battery maybe!!!

Try with the new battery and check it works or not.Otherwise consult hardware vendor for the same.