I just checked my text messaging usage and the following came up, my iPhone is connected to wifi about 90% of the time, at work and at home so there is no way I have used this data:

Could anyone tell me how much data is 342646KB?

02/01 11:26 AM phone Internet/MEdia Net Sent 342646KB

02/09 02:10 PM phone Internet/MEdia Net Sent 25613KB
02/08 07:00 PM phone Internet/MEdia Net Sent 283306KB
02/08 06:30 PM phone Internet/MEdia Net Sent 49490KB
02/07 11:59 PM phone Internet/MEdia Net Sent 16225KB
02/07 12:50 AM phone Internet/MEdia Net Sent 26190KB
02/06 11:37 PM phone Internet/MEdia Net Sent 2837KB
02/05 11:50 PM phone Internet/MEdia Net Sent 147685KB
02/04 10:35 PM phone Internet/MEdia Net Sent 30996KB
02/03 11:14 PM phone Internet/MEdia Net Sent 32586KB
02/03 04:16 PM phone Internet/MEdia Net Sent 10530KB
02/01 11:26 AM phone Internet/MEdia Net Sent 342646KB
01/31 10:26 PM phone Internet/MEdia Net Sent 766KB
01/30 04:51 AM phone Internet/MEdia Net Sent 4891KB
01/29 09:51 PM phone Internet/MEdia Net Sent 64008KB
01/29 04:18 PM phone Internet/MEdia Net Sent 13781KB
01/29 12:57 PM phone Internet/MEdia Net Sent 1523KB
01/28 10:59 PM phone Internet/MEdia Net Sent 13534KB
01/28 11:43 AM phone Internet/MEdia Net Sent 32947KB
01/27 11:28 PM phone Internet/MEdia Net Sent 25400KB
Total this page 1124954KB
TOTAL 1124954KB