Asus zenfone 2 smartphone is very good budget mobile and it has very Advanced processor that is 2.3ghz which used in laptops and PC that means you can imagine how fast the processor works here and also.
It has faster charging technology which can charge 60% of charging in just 39 minutes and the battery size of the phone also very large that is 3000 mah battery which can give charging for one days easly.