This is the official Samsung Galaxy Tab S3 (SM-T820) User guide in English provided from the manufacture.
Download Samsung Galaxy Tab S3 user guide
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The Samsung Galaxy Tab S3 with the model number SM-T820 is a WI-FI only tablet. Samsung is selling the tablet on Samsung USA official website for $ 599.99.
The Galaxy Tab S3 was announced at MWC 2017. It features 9.7” Super AMOLED QXGA display of 2048×1536 pixel resolutions. The key specs of the Galaxy Tab S3 includes
| DISPLAY | 9.7” Super AMOLED QXGA (2048×1536) |
| CHIPSET | Qualcomm® Snapdragon™ 820 |
| Quad Core 2.15GHz + 1.6GHz | |
| LTE SUPPORT | LTE Cat.6 (300Mbps) |
| MEMORY | 4GB + 32GB |
| micro SD up to 256GB | |
| CAMERA | 13MP AF + 5.0MP, Flash |
| PORT | USB 3.1(Type-C) |
| SENSORS | Accelerometer, Hall Sensor, RGB Sensor, Finger print Sensor, Gyro Sensor, Geometric Sensor |
| WIRELESS CONNECTIVITY | Wi-Fi 802.11 a/b/g/n/ac, 2X2 MIMO, Wi-Fi Direct, Bluetooth® 4.2 |
| GPS | GPS + GLONASS, BEIDOU, GALILEO |
| DIMENSION, WEIGHT | 237.3 x 169.0 x 6.0mm 429g(Wi-Fi) / 434g(LTE) |
| BATTERY CAPACITY | 6,000mAh, Fast Charging |
| OS/UPGRADE | Android 7.0 |
| VIDEO | Recording: 4K (3840×2160) @ 30fps |
| Playback: 4K (3840×2160) @ 60fps |
The Galaxy Tab S3 model variants includes SM-T825, SM-T825Y, SM-T827, SM-T825N0, SM-T827V, SM-T825C, T825X, T827R4, SM-T820 and T820X.

To learn more about the tablet, please visit Samsung USA official support page here.