We have come to know that many people are having problems configuring their phones after de-branding or after flashing it. Also there is a general mis-conception that after flashing you won’t be able to access 3G, WAP, Internet through your phone. That’s Wrong. Usually after de-branding your phone you lose all the WAP, Internet, MMS settings from the phone. And you won’t be able to send MMS or browse Internet.
For MMS and WAP to function properly, you should first create Data Accounts in Phone Settings and Then create Internet Profile and MMS profiles which make use of the Data Account. For manually creating these accounts and profiles you will need a lot of technical information from your CellPhone Service Provider. You will need to know the APN, Proxy Address if any, Username and password settings. Hence the idea of manually setting up is not recommended, unless you have spare time to figure out things.
You can directly download WAP and MMS settings for your phone from local Sony Ericsson Website. Visit SonyEricsson.COM and choose your country, Enter the website. Then Go to Support Section. In support section specific to your country, you will find links on how to configure Internet and MMS. Visit those links, You will be asked about phone model and operator name( like Vodafone, Airtel in list), Select your operator and provide your cell phone number. You will be given a authorization code, and in a few minutes Sony Ericsson will send you the Internet/MMS settings directly to your phone. Enter the authorization code in your phone. And MMS, WAP, 3G and Internet settings will be installed correctly. All operator based services should then work fine.