For some reason, the phone decided that the inbox is full. Whenever a message is sent to my phone, it will first show me that my inbox is full. After dismissing the message, then the actual message will be received. While I still get the message eventually, it is really annoying at times, especially when I am waiting for a text message for online transaction :/ Is there a way to fix this?

I am running PR1.3, running on open mode.