How do I find which battery I need for sony xperia model number 02004

hi there.
not sure if this is your phone as you did not give model number.
but try this.
First method:

1. In order to switch off the phone hold down the Power button for a short while.
2. Afterwards go to Settings and then to Backup & Reset.
3. Then selec Factory Data Reset and tap Reset Phone.
4. Choose Erase Everything if you are sure you want to clear all your data.

More items...

SONY Xperia XA F3113 - How to Hard Reset my phone - HardReset.info

www.hardreset.info/devices/sony/sony-xperia-xa-f3113/
or this one.
Restarting andresetting your device Sony Xperia XA support Canada English
or this.
Restarting resetting and repairing Sony Xperia XA support English
or this.
SONY Xperia XA F3113 How to Hard Reset my phone HardReset info

When the phone is unlocked, you only have to give in the pin that belongs to the sim you did put in.
If the phone is not unlocked, you won't be able to unlock it, because only the first owner with his sim, can ask for the unlock code. Lots of providers want you to continue a contract for a certain period, even when the original contract had finished. Go back to the person you bought the phone and insist he helps you with the unlocking.

You can't get free unlock code for a Sony Ericsson Xperia Play 4G. It is a new model. So you can try to get it from any legit paid unlocking site. For example, You can get it from www.wickedunlock.com/sony-ericsson-xperia-play-4g/rs11wp9/ at affordable cost.
Here are the steps for unlocking a Sony Ericsson Xperia Play 4G,
1. Switch ON your Sony Ericsson Xperia Play 4G with a Not Allowed SIM Card.
2. Your Sony Ericsson Xperia Play 4G will request to enter an unlock code.
3. Tap the box where you have to input the code and a number pad will appear.
4. Type in the unlock code we send to you.
5. Press the 'Unlock' button on the phone.
6. Your Sony Ericsson Xperia Play 4G phone should now be unlocked.

To decode the Sony Ericsson Xperia X8 get the Unlock code from the site
Mobile-unlocker.com/sony-ericsson-xperia-x8/rs2wp9/ and Unlock it easily....

Hello there, the IMEI number can be found on the back panel of your phone. Simply take out the battery and the panel which is located at he back has your IMEI written there. To find the IMEI of your Xperia X10 Mini, Press the Home key (the center key) On the screen, click "Settings> About Phone> Status> IMEI"The IMEI would be displayed.
Hope this solution has been helpful?
Thank you for visiting FixYa.

Heres how to reset without access to the phone.

1. Turn the power off. If your Sony Ericsson Xperia X10 is frozen, pull the battery out and reinsert it
2. Hold the Left and right buttons located beneath the display
3. Press and release the Power button
4. Follow the on-screen instructions to hard reset your Xperia X10

All data including third-party applications will be deleted from the Sony Ericsson Xperia X10. Once the wipe is complete, the phone will reboot to its factory fresh state.

Good Luck, second time someones asked for this model tonight so i had answer on hand!

It's simple to enter the NCK code in the Phone,you need to use the Instructions to enter the NCK code in the Sony Ericsson Xperia X10 phone,find in which Country ,Network it locked now?
Get the Unlock instructions from here
Onlinegsmunlock and Unlock it.....

Sony Ericsson Xperia X10 Unlocking Instructions Warning : Do not enter any wrong unlock codes on your Sony Ericsson Xperia X10 mobile phones. If you enter over a certain amount of wrong unlock codes on your Sony Ericsson Xperia X10 mobile phone, your phone may get hard locked and sometimes become unusable.
1. Switch ON your Sony Ericsson Xperia X10 with a Not Allowed SIM Card.
2. Your Sony Ericsson Xperia X10 will request to enter an unlock code.
3. Tap the box where you have to input the code and a number pad will appear.
4. Type in the unlock code we send to you.
5. Press the 'Unlock' button on the phone.
6. Your Sony Ericsson Xperia X10 phone should now be unlocked.

*NOT ACCEPTED : We mean, to use a sim card from a network other than the network your Sony Ericsson Xperia X10 is locked to.
Each Sony Ericsson Xperia X10 mobile phone has an unique unlock code. You can buy the unique unlock code for your Sony Ericsson Xperia X10 mobile phone using the form above.

try online site

Hi,

Send the manufacturer name and model number to 58355 (For E.g. Sony ericsson Xperia x10 to 58355) and BSNL will send you the settings which you will need to save on your phone. After that you will be able to use internet on your phone.

Thanks and have a nice day

Try your reset button. It is around or under the battery. It is usually a small hole. You might need to use the end of a paper clip. If this fails, see your provider.