THe Asus Zenfone 3s Max ZC521TL is not good for buy .Because sound quality is not good, infact if its not able to hear properly .The main point is that how it works .It is not working properly. Some times it get hanged and its getting hot is you use 30 to 40 minutes continuosly, If we talk about the Style or design its also average .The range is nearly about 8000 rupee, Old types features. its battery back is low, Overall for me this phone is bad, Please think before you buy this phone.