Hello,I am a bit confused regarding purchasing a good phone.I want to know which Android mobile will be best to buy. I just need perfect working with no issue.My budget is from 20000 to 25000 Rupees.It should include functions like: - Have minimum screen size of 5.5”.- Have minimum of 2GB RAM, 16GB internal memory. [if possible with expandable memory]- Have minimum Octa Core processor [at least have or more 1.5GHz]- Camera should have minimum of 13 mega pixel (back) and at least 5 mega pixel (front) - Full HD with display resolution 1920X1080. [with a good resolution for video recording also] -Smart looking and good battery life. - Perfect Touch screen with high resolution and some like scratch resistant or protection to screen [may be gorilla class- version 3 or 4]I have short listed my own 3 choices. Please compare and suggest. Possible negative point (in my openion)1. Samsung Galaxy A7 [ whether battery back-up will be a problem]2. HTC Desire S826 [ Non-metallic body & display is not Super amoled type]3. Gionee Elfie S7 [screen size a bit smaller – 5.2” & no expandable memory & after sales service] Regards