How To Stop Rejecting Messages At Low Memory? Possible Duplicate:
  I can&#39;t receive SMS when I have low storage  




When my phone reaches ~22Mb (internal) free space, my phone starts to automatically reject text messages.  Assuming they're on internal storage, can the storage location somehow be changed to external storage?
Currently, as far as my knowledge goes there does not exist an SMS app which automatically receives it and stores it on SD card, but there does exist a SMS backup feature which creates a backup of the inbox onto the SD card.

You'll have to uninstall some apps to free up space to receive more messages. Not much else you can do about this.