If you are looking for a basic mobile intex Eco plus it is best option. It cost me 725 rs. offline purchase. dont look features in this phone, call sound quality is good, battery goes up-to 2 days with moderate calling. very easy to use, really handy and too lightweight. style is also good compare to other basic phones. Very good for value for money.
tip:
1] best for calling purpose.
2] battery backup is good.
3] having some problames with network but that was not big issue.
4] if your budget is up 1k then look for the Samsung.