I was really eager to buy bitcoin and for that I have researched for valid exchanges in India, and for that I have found three reliable companies through which we can easily buy bitcoins and no need to worry for theft as they provide highly secure wallets.
These companies are Zebpay, Unocoin and Koinex.
Zebpay and Unocoin both provide the android app so you can easily access all the services for your trade.
Now about the Zebpay app, first you have to signup with valid mob number and after that you have to provide scanned documents for your KYC, for me it took nearly 24 hrs for verfication but it was about three months ago, now the popularity of bitcoin is not hidden to anyone so thereis also increased in traffic of registrations so it would take upto a week for verification.
The App is fantastic, UI is so clear and easy to use, security is also good.
Buying and selling bitcoins through zebpay is easy and takes only 10 rs of fees for withdrawing money to your account.
Its highly safe guys, good to go with it.