I have not had this issue. How do you have a file of more than one picture? Was it a zip file that you copied form PC to the phone? Or did you mean to say that you had a folder of picture files?
I recommend browsing the pictures on your phone in the verizon My Gallery app, look under My Library, and then I suggest selecting to look at them by folder, or Timeline.
You can also browse the files stored with the My Files app, also made by verizon and should have come on your phone. Be sure to check both eh Internal phone storage and the SD card.
Lastly, I recommend installing and setting up Dropbox so all pictures are automatically backed-up to their cloud storage space.