Re: how to move pictures to sim card to free up space
Welcome to Android Central! You can't move things to the SIM card, because it has very little storage, and is intended only for contact storage (which you shouldn't use it for either, because you should be saving your contacts to your Google account). Since the Maxx doesn't have a microSD card slot, you should be backing up the photos regularly to your computer's hard drive or to a cloud storage service like Google Drive, Google+ Photos, Dropbox, etc.