Abdullah Mahmood: LG

I will review TOP 3 smartphones of 2017

well on number 1 is

samsung GALAXY S8

Body: Polished aluminum frame, Gorilla Glass 5 front and rear; IP68 certified for water and dust resistance. Arctic Silver, Orchid Grey, Black Sky, Maple Gold, and Coral Blue color schemes.
Display: 5.8" Super AMOLED, 2,960x1440px resolution, 18.5:9 (2.06:1) aspect ratio, 570ppi; HDR 10 compliant (no Dolby Vision).
Rear camera:12MP, f/1.7 aperture, dual pixel phase detection autofocus, OIS; multi-shot image stacking; 2160p/30fps video recording.
Front camera: 8MP, f/1.7 aperture, autofocus; 1440p/30fps video recording.
OS/Software: Android 7.0 Nougat; Bixby virtual assistant.
Chipsets: Qualcomm Snapdragon 835: octa-core CPU (4xKryo 280 + 4xCortex-A53), Adreno 540 GPU. Exynos 8895: octa-core CPU (4x2nd-gen Mongoose + 4xCortex-A53), Mali-G71 GPU.
Memory: 4GB of RAM (a 6GB option likely in some markets, later down the line); 64GB of storage; microSD slot up to 256GB, UFS cards support.
Battery: 3,000mAh Li-Po (sealed); Adaptive Fast Charging (same as S7); QuickCharge 2.0 support; WPC&PMA wireless charging.
Connectivity: Single-SIM, Dual-SIM available in certain markets; LTE-A, 4-Band carrier aggregation, Cat.16/13 (1Gbps/150Mbps); USB Type-C (v3.1); Wi-Fi a/b/g/n/ac; GPS, Beidou, Galileo; NFC; Bluetooth 5.0.
Misc: Fingerprint reader; iris recognition/face recognition; single speaker on the bottom; 3.5mm jack; bundled AKG headphones.

No stereo speakers
Fingerprint scanner in an inconvenient location (though admittedly easier to reach than on the S8+)
The bulk of the photo and video content doesn't make the most of the available screen area due to the unusual screen aspect ratio

on the 2nd position:

Body: Aluminum frame, Gorilla Glass 3 front, GG5 back; chamfered LCD for impact resistance; IP68 certified for water and dust resistance.
Display: 5.7" IPS LCD, 2,880x1440px resolution, 18:9 (2:1) aspect ratio, 565ppi; HDR 10 and Dolby Vision compliant.
Rear camera: 13MP f/1.8 primary camera with 71° field of view, OIS. Additional 13MP f/2.4 wide-angle camera with 125° FOV, no OIS. 1.12µm pixel size on both. 2160p/30fps video recording on both.
Front camera: 5MP, 100° FOV; 1080p/30fps video recording.
OS: Android 7.0 Nougat.
Chipset: Qualcomm Snapdragon 821; quad-core CPU (2xKryo@2.35GHz + 2xKryo@1.6GHz), Adreno 530 GPU.
Memory: 4GB of RAM; 32GB/64GB storage (region dependent); microSD slot for cards up to 2TB (practically up to 256GB).
Battery: 3,300mAh Li-Po (sealed); QuickCharge 3.0 fast charging; WPC&PMA wireless charging (US version only).
Connectivity: Single-SIM, Dual-SIM available in certain markets (mostly Asia); LTE-A, 3-Band carrier aggregation, Cat.12/13 (600/150Mbps); USB Type-C; Wi-Fi a/b/g/n/ac; GPS; Bluetooth 4.2; FM Radio (outside South Korea, US and Canada).
Misc: Fingerprint reader; Hi-Fi Quad DAC (South Korea exclusive); 2 mics, single speaker on the bottom; 3.5mm jack.

On 3rd position is:

Aerospace-grade aluminum unibody (glass window on the back); splash and dust resistant (IP53)
5.5" AMOLED screen of QHD resolution, 534ppi, 100% NTSC; 2.5D Gorilla Glass 4
Quad-core Kryo processor, Adreno 530 GPU, 4GB of RAM, Snapdragon 821 chipset
Google-loaded Android 7.1 Nougat; 2 years of OS upgrades from launch, 3 years of security updates
12.3MP camera, f/2.0 lens, 1.55µm pixels, Phase and Laser AF, dual-LED, dual-tone flash; 2160p and 1080p @ 30/60/120fps video capture
8MP selfie camera, f/2.4 lens, 1.4µm pixels; 1080p video capture
Comes with 32GB or 128GB of built-in storage, no expansion
Fingerprint reader, Android Pay
LTE Cat 9 or 11 (450Mbps or 600Mbps downlink, 50/75Mbps uplink); Wi-Fi a/b/g/n/ac, Bluetooth 4.2 (A2DP, LE), GPS + GLONASS, NFC
3,450mAh battery; Fast charging over USB Type-C