This is my old sony ericsson it was and still is but cannot remember the password and the model make whichr behind battery they r to warn out to warn so thanks for you

Hi, you can reset phone lock with the following service for your phone model: http://www.fastgsm.com/en/sonyericsson/se/t715/unlock-code-unlocking/phone-lock-password/flashing-debrand/network-unlock

Sony Ericsson W100i is latest phone,Free unlock code is not easy to get for the model.You need to pay for this phone's unlock code.If it's DCT nokia or some other brand's old phone you can get Free code.To get the unlock code for SONY ERICSSON W100I model Phone unlock code at reasonable cost ,visit the site Theunlockarena.com/sony-ericsson-w100i-spiro/rs13wp9/ get the code and unlock it easily.

I will help to unlock your old Contract Phone Sony ericsson C905 Model ,You can buy the unlock code from the site Theunlockspot.com/sony-ericsson-c905/rs10wp9/ and follow the instructions below and enter the unlock code in the phone and unlock it step by step.

Sony Ericsson C905 Unlocking Instructions Warning : Do not enter any wrong unlock codes on your Sony Ericsson C905 mobile phones. If you enter over a certain amount of wrong unlock codes on your Sony Ericsson C905 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch ON your Sony Ericsson C905 without any SIM Card,
2 - Press the left arrow key/button once,
3 - Press the button * twice,
4 - Press the left arrow key/button once,
5 - The message "Personalize with MNC2" will appear, (or you will have displayed an unlock menu, select the lock you want to unlock)
6 - Enter the Unlock Code.

*Turn off the phone
*take off battery & put back in
*press and hold down the right & left silver buttons just under the screen
*with stylus press in the hole on the right side of battery
*after 10Sec you will be prompted to press the R key
*If successful press the space key to finalize changes

www.usedcellphoneshop.com

To unlock your Sony Ericsson W200i phone you will need to enter the
code. This code is just a calculation of IMEI number of your phone. To
find your phones IMEI number - type *#06# into your phone.
There are different online services that will calculate the unlock code
for your IMEI number. I can recommend this one (cheap and reliable).
go to the following link and select your model.


http://www.thephoneunlockers.com/Sony-Ericsson-Unlock.html

Sir go to sonyericsson centre or a certified mobile fone repairer to solve it...take care

You can only change your code once you give the old one. If you cant remember the opl one then you cant put a new one just like the password. Only wayout is to re-install the firmware thru your phone's service centre. But you may put another code which you may forget again. My suggestion is not to put any codes. If you have to because of the earth shaking consequences on loosing the data, then it should be such which you cant forget however hard you may try.

This is usually a software issue on K series Sony Ericsson Handsets, try using the Sony Ericsson Update Service to Update or Re-Install the phones firmware... Its available to download from the Sony Ericsson support site if you dont already have it http://www.sonyericsson.com/cws/support/phones/k770i?lc=en&cc=gb Remember though if your phone is unlocked, the unlock for these may have been a Flash Patch unlock so you might have to get it unlocked again afterwards...

it will require unlocking tools to reset back to default

Try typing #pwd# and then send. It will reset your password to the last 4 digits of your phone number.
Then you can reset your password back to what ever one you can remember.