What app did you use to hide them? If you're not using the stock app for messaging uninstall the app and install it again. Your messages should be held by your stock app and once restored they should reappear. If you're using a stock app try installing a third party app and see if they don't show up there. You have to careful with hiding apps, and follow their instructions when removing, because many make small changes to data that allows them to read or see the info which may not be undone of simply uninstalled.
Posted via the Android Central App from my HTC One M9
07-13-2015 07:12 AM