I have a Samsung Galaxy S4 mini. When taking a video (such as on snapchat, or instagram, etc). Before I start the recording, the image is perfectly focused. The second I start recording, the camera completely unfocuses over about 1 to 2 seconds.
Help! The stock camera app stopped working after I used video recording mode and switched to front camera. The camera could still be accessed using third-party camera apps such as Cymera but I like the stock camera app more.