I have LYF F1anriod mobile phone.it is good 4GMobile special for who use jio sim the sound feature of this mobile is good for voice calling and audio and video feature.and use of ear phone also give good sound quality.the use of this mobile is so simple and operate easy to use anyone.style and desine of this phone is good it desine show quality of product.featute range of this mobile have good feature like ram is 3GB ram and it is easy to dowmloding application and store many application easy to use and ROM is32GB in this phone and battery is 3200mh and use long time use when we on calling, music purpose. this phone is really reliability and durabilaty pbone.my personal experince I thought when I purchage this mobile phone its give my value of money