answer:. The main reason for the Android mobile to hang is seen in its mobile space. This means that when you use many applications at the same time, if the memory ( RAM) is less than required, the mobile may hang. 2. If we install an arbitrary amount of applications in the phone memory ( Internal Memory / ROM) instead of the memory card ( External Memory) , then the phone may hang due to the lack of ROM . 3. If cookies, caches, log files. Is not cleaned. However, these become the cause of memory jam and mobile hang. 4. Heavy applications compared to mobile's memory , mobile hangs when playing games.