Nexus 6 - MMS and SMS issues - Straight Talk AT&T topic

So I got my Nexus 6 in a few days ago after my Note 2 was murdered. I've been getting MMS but I cannot download the attachment for some reason. I can't send pictures either. Also, I frequently get a lot of 'message not sent' errors. I've checked my APN settings and used several variants of the APN codes, but I still can't figure it out. Its a brand new Sim Card.

Anyone had this issue before? Anyone know how to fix it?

Thanks!

Sent from my Nexus 6 using XDA Free mobile app