You download and install some applications from unknown source. These applications might be malware or be incompatible with your Android version.
- Bugs, glitches and viruses may take control of the Android system.
- The running system might be corrupted or scrambled due to an interrupted or improper update process.
- You flash a custom ROM, kernels or stock firmware using Odin.
- It is possible that the problem is caused by the hardware problem.