You may find it necessary to occasionally remove the battery from your Sony Ericsson mobile device. Removing the battery from your cell phone may need to be done to replace an old battery or to perform a reset on your phone. Although Sony Ericsson phones may vary slightly from model to model, they tend to follow the same basic instructions for battery removal.
Turn off the power on your Sony Ericsson.
Flip the phone over and apply pressure to the thumbnail slot on the battery cover of the Sony Ericsson. Slide the cover off in a downward motion. This procedure may vary from model to model.
Remove the battery that has been exposed. You may use the tip of a pen or pencil to help flip the battery out if it seems to be lodged in tightly.
Some older versions of the Sony Ericsson may require you to unscrew the battery cover with a very small Phillips screwdriver.