Can't locate a solution to the "low storage space" issue, OR how to upgrade my Android version.. I've cleaned-up any unnecessary apps and files, and it's a brand new phone. No media on it...only 4 or 5 contacts in my list...but when I try to add more contacts, I apparently have "insufficient storage. There's a 4gb sd card in it...which has next to nothing on it, though I've move some things off the phone and stored them on SD card...but there SHOULD be plenty of memory. I really need to update to a newer system...but the phone's update system doesn't work. I really want to try an update package to see if that helps...but can't locate any that work. Any help to upgrade to latest Android version, as well as correct the storage issues would be greatly appreciated. Thanks!

Cell Phones - Tracfone Wireless - Telcel ZTE Midnight Prepaid Cell Phone