Help SMS icon disappeared

[#1]

Hi everyone,

I don't know what i have done.. but all of a sudden my messaging icon disappeared from my home page and main manu.

everytime i try sending a text to someone from my contact list i get this message

You seem to be trying to send a WhatsApp message to a phone number that is not registered with WhatsApp.

Your account mudt have WhatsApp installed in order to chat to WhatsApp.

If this was done automatically, it is likely that WhatsApp is the default messaging app.

Press "SMS" to send a normal SMS to this contact, press "invite" to send an invitation, or press "Reset" to restore default messaging app setting.

i pressed SMS but the same message keep coming up over and over again. Also, i selected Reset but nothing happens.

i've reset my phone through "Factory data reset" but i still can't find the messaging icon.

and when i enter a number and select "Send text message"

i get the same message above and when i uninstalled WhatsApp i got this message:

unfortunately, the process com.sonyericsson.android.soci alphonebook has stoped

plzz help me

* I can't recieve any text messages

[#2]

i followed the steps .. how do i know the process is finished ? because i disconnected my phone and i tryed to switch it on again and its not switching on !!

[MarlonUk1]

try connecting to the charger./

[#4]

Still it is not switching on it does vibrate but the screen is black

[Uliwooly]

repeat the whole process all over again

Don't forget to mark the Correct Answers & Helpful Answers

[#6]

I've connected it to the PC Companion and selected repair .. Hopefully it will work

[#7]

I will wait for the repair update .. if it didnt work i will repeat the whole process again ..

[MarlonUk1]

so sus and pcc can recognize your phone now yeah?

[#9]

yh i guess .. it says : preparing computer for software update

[#10]

it didnt work .. it says there is no software update for ur device .. i will try to follow the previous steps again

[#11]

i did i reach to the point where it said :

05/044/2012 19:44:16 - INFO - turn on Unknown Sources and Debugging

and i am still holding the back key