Over the last month or so, every time I'm at work and I try to send a text message to a non apple phone, it won't go through. This only happens when I'm connected to the wifi at work. I have reset the network connection multiple times, and it only works until the next day. My imessages still work, and I did not change any settings aroud this time. Any ideas? There is another iphone user in the office having the same issue, which would make me think that it has to be an iphone problem more than anything else. We are both updated to the latest ios.