My vivaz wont send text messages - Sony Ericsson Vivaz Cell Phone

for sending text messages :
1.go to your message settings and check the message center number to see if it is correct
2. call to your network operator customer care
3. request the message center number...
4.note it down
5. go to message settings>message center number
6. insert the number which is noted by you and save it

this solves your messaging problem ...
Good luck

i think your message center number is wrong.. Check it in your message setting.

In u r phone settings r changed go to messaging -> message settings -> select text messages now set the same Delivery reports YES,message center this is important one to send messages u have to call the costumer care ask number,msg.center in use is used to choose sms center, message validity is maximum time, use packet data select NO, rep.via same center select NO, those all settings after it was not working then just got to the settings and select rest.factory setting it will restore the u r settings.

Restore it to its Default Settings.

Please try to check the SMS network configuration settings of your phone through your Service Provider. They need to reconfigure your account to activate this feature on the phone.
If this seems to be fine, then try the following:
1) Go to your outbox and cancel sending the message. It should have an X on it or something. 2) Take out your battery without turning it off first.
3) Remove your SIM card and put your battery back in.
4) Boot your phone back up without the SIM card.
5) After it boots all the way up, remove the battery again without turning your phone off.
6) Put your SIM card and battery back in and turn your phone back on.
7) Go to your outbox and delete your canceled message(dont try sending it again).

Restore your phone to factory settings

In message settings put text as message type and maximum time as validity. Then put reply via same center. May be this way your problem could be fix up.

Hi,

To get GPRS/MMS setting, you need to contact your service provider through phone or go directly to their office.

They will send you the settings for your model. You will receive service settings in the special text message called as smart message. Please save the settings to your phone and set it has default settings. Then you can start using the GPRS/MMS in your phone.

Thank You

flash it by higher version

check the "send message via" number
call your service provider to confirm you have the correct number in the box