Here is the list of the smartphones that are best to buy in India under the price range of 15000 to 20000
Xiami Mi4
5.0-inch IPS LCD, 1920 x 1080 pixels, Corning Gorilla Glass 3 protection
Android 4.4 KitKat based MIUI 6.0
Qualcomm MSM8974AC Snapdragon 801 SoC, 2.5 GHz quad-core CPU, Adreno 330 GPU
3GB RAM
16GB/64GB of non-expandable internal storage
13-megapixel rear camera with LED flash and a 8-megapixel front camera
3G, Wi-Fi 802.11 a/b/g/n/ac, Buetooth 4.0 with A2DP, GPS with GLONASS
One Plus One
5.5-inch IPS LCD, 1920 x 1080 pixels, Corning Gorilla Glass 3 protection
Android 5.0.2 Lollipop based Cyanogen 12s
Qualcomm MSM8974AC Snapdragon 801 SoC, 2.5 GHz quad-core CPU, Adreno 330 GPU
3GB RAM
16GB/64GB of non-expandable internal storage
13-megapixel rear camera with LED flash and a 5-megapixel front camera
4G, Wi-Fi 802.11 a/b/g/n/ac, Buetooth 4.0 with A2DP, GPS with GLONASS
Asus Zenfone 2 ZE551ML
5.5-inch display, 1920 x 1080 pixels, Corning Gorilla Glass 3, Glove Touch support
Android 5.0 Lollipop operating system with new Zen UI
Intel Atom 3560 SoC, 1.8GHz quad-core CPU
4GB RAM
32GB of internal storage which is expandable with a microSD card (up to 64GB)
13-megapixel rear camera with LED flash and a 5-megapixel front camera
Dual-SIM, 4G LTE, 3G HSUPA, FM Radio, GPS with 5 satellite connectivity
Wi-Fi ac/a/b/g/n, Wi-Fi Direct, Bluetooth 4.0, Micro-USB port with USB Host, and 3.5 mm headphone jack
3,000 mAh battery; 152.5 x 77.2 x 10.9 mm; 170 grams
Samsung Galaxy Note 3 Neo
5.5-inch, 1280 x 720 pixels, Super AMOLED display
1.7 GHz Dual Core + 1.3 GHz Quad Core Exynos processor
2GB RAM
Android 4.4 KitKat
8MP rear camera with BSI sensor, 2MP front camera with BSI sensor
16 GB internal memory, 64 GB expandable memory
3G HSPA+, Wi-Fi a/b/g/n/ac, Bluetooth 4.0, GPS with GLONASS, NFC
3,100 mAh Battery
Huawei Honor 6
5-inch LTPS IPS LCD display from JDI, 1920 x 1080 pixels, 445 ppi, 10-point capacitive multitouch
Android 4.4.2 KitKat with Emotion UI v2.3
octa-core HiSilicon Kirin 920 processor (4 x 1.7GHz Cortex A15 + 4 x 1.3GHz Cortex A7)
3GB RAM, 16GB internal storage, microSD card slot
13-megapixel primary camera, Sony BSI sensor, autofocus, LED flash
5-megapixel secondary camera
Single-SIM, 3G HSPA+, dual-band Wi-Fi b/g/n, Wi-Fi Direct, Bluetooth v4.0, NFC, A-GPS and microUSB v2.0 port
3,100 mAh battery
HTC Desire 826 (16GB)
SoC: Qualcomm Snapdragon 615
CPU: Octacore 1.7 Ghz + 1 Ghz configuration
RAM: 2GB
Size: 5.5 inches
Resolution: 1080P
Rear Camera: 13MP
Front Camera: 13MP
Internal Storage; 16GB
MicroSD Support: Yes, upto 128GB
Battery: 2600mAh
OS: Android 5.0.1
ZTE Nubia Z9 Mini
Price: Rs. 16,999
SoC: Qualcomm Snapdragon 615
CPU: Octa-core 1.7Ghz
RAM: 2GB
Display Size: 5-inch
Screen resolution: 1920 x 1080p
Rear camera: 16MP
Front Camera: 8MP
Internal Storage: 16GB
MicroSD support: Yes, upto 128GB
Battery: 2900mAh
OS: Android 5.0.2
Samsung Galaxy S4
Price: Rs. 17,999
SoC: Exynos 5410
CPU: Quad-core 1.6Ghz + Quad-core 1.2Ghz
RAM: 2GB
Display Size: 5-inch
Screen resolution: 1920 x 1080p
Rear camera: 13MP
Front Camera: 2MP
Internal Storage: 16GB
MicroSD support: Yes, upto 64GB
Battery: 2600mAh
OS: Upgradable to Android Lollipop
iPhone 5C (8GB)
Price: Rs. 19,990 (approx)
SoC: Apple A6
CPU: Dual-core 1.3Ghz
RAM: 1GB
Display Size: 4-inch
Screen resolution: 1136 x 640p
Rear camera: 8MP
Front Camera: 1.2MP
Internal Storage: 8GB
MicroSD support: No
Battery: 1510mAh
OS: Upgradable to iOS 8.3
Lenovo Vibe X2
SoC: Mediatek 6595M
CPU: True-octacore 2Ghz Processor
RAM: 2GB
Size: 5 Inches
Resolution: 1080p
Rear Camera: 13MP
Front Camera: 5MP
Internal Storage: 32GB
MicroSD Support: Yes
Battery: 2300mAh