Best smartphone under 10000 rupees?

Nokia Lumia 520
Currently it is the cheapest Windows Phone 8 based smartphone and is available for around Rs 7,500. Not only the brand of Nokia, but Lumia 520 has several pluses that elevated it to this list of The Mobile Indian.
Launched in May this year Nokia Lumia 520 comes with a 4 inch touchscreen. The IPS-LCD display has 800 x 480 pixel resolution, which translates to a good 233.24 ppi pixel density. Lumia 520 comes in red, yellow, white, cyan and black colours and looks gorgeous in all the versions.

Xolo Q700
Though available for around Rs 9,000, this handset has impressive features. First of all it comes with a 4.5 inch IPS-LCD display with decent 540 x 960 pixel (qHD) resolution. Its display is made with OGS (One Glass Solution) technology, which is hailed for its clear output and anti-fingerprint properties. Besides, it has Android 4.2 Jelly Bean operating system, a 1.2 GHz quad core processor, and 1 GB RAM.

Spice Coolpad 2 Mi-496
Though we haven't reviewed it, we had to consider this device since it is the cheapest smartphone from a renowned brand to come with 1 GB RAM. It is available for Rs 5,999. Spice Coolpad 2 also has a 1.2 GHz quad core processor, which indicates decent performance.

Micromax Canvas Doodle A111
It is the biggest phone in this list. The Canvas Doodle A111 comes with a huge 5.3 inch touchscreen, but the display has only 480 x 854 pixel resolution. This dual SIM smartphone has Android 4.1.2 Jelly Bean operating system, a 1.2 GHz quad core processor, but only 512 MB RAM. Like others in this list, it has 4 GB ROM and 32 GB expandable storage facility.

Lenovo Ideaphone A706
It comes with a 4.5 inch display with 480 x 854 pixel resolution. Lenovo Ideaphone A706 has Android 4.1 Jelly Bean operating system, a 1.2 GHz quad core processor, 1 GB RAM, 4 GB ROM and a 32 GB expandable storage slot.

i would choose xolo or lumia for more details go to the site in source

Dear there are many phone in the market in this range, So out of those i would like to suggest you Samsung Galaxy S Duos, This is the best phone in this range and i'm too using this phone and i'm quite satisfy with this phone so i suggest you to go with this phone, Dear have a look at his features -

Display - TFT capacitive touchscreen, 16M colors, 480 x 800 pixels, 4.0 inches (
233 ppi pixel density)
Internal Memory - 4 GB Storage, 512 MB RAM
Camera - Camera 5.0 MP,2592 x 1944 Pixels
Front Camera - :0.3 MP
OS - Android OS, v4.0 (Ice Cream Sandwich), upgradable to v4.1 (Jelly Bean)
CPU - 1 GHz Cortex-A5, Chipset: Qualcomm MSM7227A Snapdragon, GPU: Adreno 200

Dear Now choice is yours, Hope this answer your query.

Only recommended smartphone in this budget is Nokia Lumia 520 or you can wait for the Lumia 525 (its about to reach market).

Micromax Canvas Doodle is best phone.

You have only 2 option
1-micromax juice a77
2-xolo q800
now check both mobile and then decide your self

Lumia

As you asked in this budget range i found only 2 best option for you.
MOTO E
Xiaomi Redmi 1S

You can check the both smartphone it comes under Rs. 7000.
with quad core processor and 1 GB RAM. Go for it.