Cant send mms or go on the interent on xperia x10 white

[#1]

Cant send mms or go on the interent on xperia x10 white been a problem since i rebooted the fone and now cant use mms or interent does anyone know how i can sort it or know away of fixing it, it says the application messaging(process com.android.mms) has stopped unexpectedly please try again or says currently cant connect  or curently cant download please try later and i dont know what to do anymore also iv spoken to my network and they done everythink they can now they think its the fone. please hellp thank you xxx

[sushidushi]

I turned mine off deliberately.  Try Menu button - Settings - Wireless controls - Mobile networks.  The first item in the list is 'MMS & data'.  You won't be able to sent MMS or use your mobile phone company's 3G internet stuff unless there is a tick in the box.  So, if there's no tick, touch that line on the screen to turn on MMS and mobile internet settings.  Hope this helps...