budget android smartphone

Main purpose is for calls, WhatsApp, YouTube (only viewing), shouldn't have noticeable lag when using these. Also want to know if it is important to buy from a brand whose service centre is available in my location. Maximum upto ₹10k

i want to buy a new RAZR MAXX, but in India the news is out that Motorola is rolling out it's further operations & have to stay here longer so if i buy RAZR MAXX, (I'm in love with it) can i get any further after sales service in India? Ya they're obliged to give me a 1yr warrant but what...