i played on pc, my pc is pretty shit and have the same amount of ram that my phone have and in the pc the game never crashed
It's a completely different platform and so it can't really be compared. Textures for example use different compression, there are different system calls and so on. Not to mention system itself uses different amount of ram on phones when you have 4GB you probably only have around 1GB of usable ram.
For best experience use a PC.