Okay, so last Wednesday, I had some majorly frequent S4 restarting issues. Each time I used the camera (especially switching from back to front camera), it will freeze and reboot itself. I couldn't even use the barcode scanner without it freezing itself up. I did a FDR but the problem still persisted.
On Thursday, I called the Samsung Call Centre and was dealt with a very impatient person who looked forward to ending the call than helping a customer
So, I took my phone to Samsung @ Gardens (KL) as they have a technician there for software related issues. I was told that they will help me to reinstall the entire software and it would take up to 2 hours. I had asked on what was the difference between a re-installation of the software and a FDR. They mentioned something about FDR only affects one section/partition where else the re-installation will be from A-Z (Maybe someone here can shed some light on how true this is).
I wasn't able to find out more on the cause of the random reboot as by the time my phone was ready, the technician had gone home.
I've been actively testing the camera out and so far, it was alright. I thought it was fixed until it restarted itself again today.... -.-
But the re-installation did reduce the frequency of the random reboot. So probably it is a software related issue? I'm not sure.
I feel like we should gather everyone who is facing this issue and march into the service centre together lol.