My phone have 2 gb ram thats sufficient for any android os but i suffered very low ram approx only 150-200mb out of 2gb always.its serious problem whats d cause of this. Pl suggest. And one more tjing i tried to use photocollage for first time , when i save the output through this, it says out of memory. This is d serious prpblem because i purchased this mob before 1 week and memory is not used in bulk anywhere. Pl take this as highest priority.