Sony ericsson mobile - WT19i, mobile data is not starting even after the data switch is put on

SONY ERICSSON Live with Walkman WT19i How to Hard Reset my phone HardReset...

You will most likely need to follow the steps on the link above to complete a hard reset of the device. Be warned that your information will be erased and the phone will be returned to the factory default settings.

try disabling powersaving mode in your settings

There should be a button on the laptop that turns on and off the WIFI radio. You may want to be sure this is in the on position.

Hi

Install the sony ericsson Pc Suit and connect your mobile and press synchronize, and click the Mobile Networking wizard and select new connection and put your service provider setting and start the internet.....

it may be due to network lock, contact service provider if it locked , you can get unlock codes here http://www.mobile-unlocker.com/sony-ericsson/rs2wp8/
you need to specify the country and network provider

software is corrupt, either use sony ericssons update service (on sony ericsson website) or read this tutorial http://forums.se-nse.net/topic/39748-tutorial-flashing-a2-phones-with-a2uploader/

your mobile data cable to switch in computer and show icom to unlocke your mobile

try to change your battery first

go to www.topsony.com this is a paysite

usb not connect to pc and valume vere vere slow