I have a 3GS ios 6.1 operating on the 2degrees network. Am on a prepay contract with a lot of data and money left on my balance.
It appears that when I attempt to send a pxt to anyone the message fails. Or at least that's what it says.
I attempted to send one the other day to another iPhone and it said it failed. However it did actually get thru.
I have since attempted to send pxts to other phones, one a galaxy and one a Nokia but again message states failure to deliver.
I have sent pxts before, however only recently have I noticed this occurring.