Spec Req for cellphones

Any thoughts on min/max specifications for a roughly decent quality cellphone by '16 standards?

How many cores should it have? Is 512 mb ram too little? How much ram is too much on a smartphone? Other spec req?

>>21

Unused RAM is wasted RAM.

Unused RAM is the safe guard against out of memory errors. In fact, getting out of memory in production deployment can cost you your job.