Won't send texts longer than 160 characters

[Montrav]

So out of the blue my s3 decided that it will not send ANY texts longer than 160 characters. I've rebooted the phone several times, cleared data for the messaging app, deleted text history, none of that has worked. Before now, I could send texts of any length with no issue. Is there anything I can do? I have the stock OS (not rooted) and am using the stock messaging app. Is this a phone issue or a carrier issue?

 

[anon(11078)]

Did you check you settings in your messaging app? There is a setting for maximum characters.

Sent from my Galaxy SIII

 

[Montrav]

Yes. I double checked just now but I was in the middle of a long text conversation and haven't touched the settings in months. Literally in the middle of this conversation, the multi-message "messages" failed to send, out of the blue for no reason.

(And I have tried to send other multi text messages to different contacts, none of which will go through.)