I just picked up the Nexus 5 a week ago and other than battery life and Hangouts I think the phone is awesome!
Anyways I'm having a weird intermittent problem when I send texts through Hangouts and I'm not sure whats causing the issue. I've had Hangouts send roughly a dozen texts through thinking they were picture texts.
I can receive texts, make and receive calls and send and receive MMS texts.
I have contacted T-Mobile support but am having problems getting it fixed through them because I have AOKP on my phone and they don't understand it.
I am using Google Voice to send texts but I don't really like it and want to use the Android messaging app.
When I check the SMSC number it shows "+12063130004",1