Answer to "My camera won't focus."Make sure there aren't any smudges on the camera lenses that would tamper with the cameras focus. If camera continues experiencing problems restart the phone and try again. If that doesn't work try deleting the camera app and downloading. The app data could have been corrupted resulting in the camera focus not working.
Answer to "Why am I losing connection to Bluetooth?"Make sure you have the Bluetooth Smart box checked. Open your Bluetooth menu, tap the settings sprocket beside the Casio watch. Make sure the Bluetooth Smart box is checked. This may be part of the problem. Some phones default to not having it checked.