Hi, I'm Randy. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
What is the model of the phone?
okay, thank you. Follow these steps please>
No, unfortunately this sounds like the firmware has corrupted. If that is the case the data on the internal memory is already lost. The only data that will be saved is on the google back up and sd card. The only option at this point will be a factory restore.
Do you want to try the restore?
that is usually what causes the issue, it requires a certain amount of memory to operate properly and when it gets overloaded the firmware sometimes gets glitched.
Did that work for you?