I recently bought a Lava Xolo X900. Last night I sent some "happy new year" MMS's. However, none of them has been sent. They have sent time, but reviewing them displays a "sending" status in the lower right corner. And none of them has been received by the recipients. I think that the phone said that the service was unavailable when I sent the messages last night, but that they would be delivered when the service was available again.