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Memory is one of the most important assets your Android application has. Android tries to keep as many applications in memory as possible, even when they’re not in use. This behaviour makes switching between applications and tasks quick and keeps a device feeling “snappy” to the end users. Memory pressure is an increase in what is called “memory pressure” You can think of memory pressure as the primary application, the one the user is interacting with, squeezing the other applications out of memory.