Q: Having problems sending pictures thru text, since I update software 9.3.1.

Here are the troubleshooting steps for MMS:

• Make sure that you’re connected to the Internet through cellular data or Wi-Fi.
• Go to Settings > Messages. Check that the type of message that you're trying to send is turned on (iMessage, SMS, MMS, or Group messaging)
• Restart your device.
• Check for a carrier settings update.
• Check for an iOS software update.

If it's still not working, contact your carrier.

If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support

Having the same issues; your refering to iMessage? I turned iMessage off because of this issue. What what stated for a fix did not work. I'm sure it's software issue. Hope this gets resolved.

I am having the same issue since the update.  I have tried all the "fixes" I found in related forums.  Nothing has worked.

This answer doesn't help! It's not the carrier. Carrier has nothing to do with sending photos of wi-fi  I'm having the same exact problem!

So my question, did anyone ever get it fixed ?? I'm having the same problem on my 6 but not the same with my 6+

Did you ever get any help on this ??

YYes I'm still having the same problem!

Nope! Sure didn't. They tried to blame the carrier but it doesn't work on wi-fi either.

Wow !! This is extremely irritating......