SMS... iPhone spontaneously adding 1 to phone numbers, resulting in error

Question

I have all of my contact phone numbers stored as 10 digit numbers.
Recently, when texting to some of these contacts, the iPhone has started adding the extra digit "1" before the phone numbers, resulting in error messages, and undelivered text messages.
What gives? Has anyone else had this problem?

Answer 1

you can do this with apple script.
Paste the following into Script Editor and run it.
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #ADD8E6;
overflow: auto;"
title="this text can be pasted into the Script Editor">
tell application "Address Book"
set NP to number of people
repeat with i from 1 to NP
set pers to person i
repeat with cphone in phones of pers
if value of cphone is not equal to "" then
set cur_phone to value of cphone
set value of cphone to "1" & cur_phone
end if
end repeat
end repeat
end tell</pre>