Hi, i m writting to about of oppo A57.it is a amegeing mobile of oppo.cuality and facility if this mobile is very good.this is a stylish mobile of oppo it is the mobile is the market price now in india RS-14990 only.sound cuality of this mobile is very good.screen protection 2.5d curved.it is a gold color mobile disply type of this mobile IPS TFT.octa core processor.storage RAM 3GB ROM 32GB is involped in this mobile.expendable memory up to supported in 128GB.rear camera 13mpand front camera 16 mp.OTG supported with A-GPS.Battery LI-ION 2900 and network type 2, 3, 4G in supported in this mobile.