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Global Score
Basic Information
Android 11Android 9.0 Pie, 8.1 Oreo
6.50 x 2.98 x 0.35 inches6.16 x 3.01 x 0.27 inches
8.04 ounces5.50 ounces
Phantom black and Silver16 777 216
Aluminum and Glass (Corning Gorilla Glass Victus)Aluminum and Glass
Scratch-Resistant GlassScratch-Resistant Glass
$ 966.00$ 297.00
Display / Screen
6.8 inches6 inches
3200 x 1440 pixels 2160 x 1080 pixels
516 pixels per inch402 pixels per inch
1500 cd/m2 brightness--
No touch screenNo touch screen
Qualcomm Snapdragon 888 chipsetQualcomm Snapdragon 835 MSM8998 chipset
Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processorKryo 280, 64-bit, 10 nm (Octa-Core 2450 MHz) processor
Adreno 660 GPUAdreno 540 GPU
128 GB internal memory64 GB internal memory
No SD card slotmicroSDXC (up to 1,95 TB) external memory slot
108.00 MP + 40.00 MP12.00 MP + 8.00 MP
f/1.80 aperturef/2.00 aperture
24.00mm focal length26.00mm focal length
0.75 inches (1/1.33") sensor0.34 inches (1/2.9") sensor
7680 x 4320 (24 fps) video resolution3840 x 2160 (30 fps) (4K) video resolution
1280 x 720 (960 fps) (HD) slow motion video1920 x 1080 (60 fps) (Full HD) slow motion video
Mobile HotspotMobile Hotspot
5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPALTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA
Nano SIMNano SIM
Battery Life
5000mAh Li - Polymer Battery3000mAh Li - Ion Battery
Non-Removable BatteryNon-Removable Battery
Wireless Charging--
Other Features
Bluetooth 5.1 Bluetooth 5.0
Fingerprint ID ScannerFingerprint ID Scanner
Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity SensorAccelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor
FM Radio--

Comparison review

The Samsung Galaxy S21 Ultra is better than the Moto Z3, getting a 11.67 score against 9.74. The Samsung Galaxy S21 Ultra is a newer cellphone than the Moto Z3, although it's a lot thicker and much heavier. These phones work with Android OS (operating system), but the Samsung Galaxy S21 Ultra has 11 version and Moto Z3 has Android 9.0 Pie.

The Samsung Galaxy S21 Ultra features a much more vibrant screen than Motorola Moto Z3, because it has a better resolution of 1440 x 3200 pixels, a bit larger screen and a higher pixel amount in each inch in the screen. Moto Z3 features a much greater memory capacity for applications and games than Galaxy S21 Ultra, because although it has just 64 GB internal memory capacity, it also counts with a SD card slot that supports a maximum of 1,95 TB.

Samsung Galaxy S21 Ultra features a bit better processing power than Moto Z3, and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has more RAM memory. The Galaxy S21 Ultra takes much better videos and photos than Motorola Moto Z3, because it has a way more megapixels back-facing camera, a larger aperture, a much higher video resolution and a much larger camera sensor.

The Samsung Galaxy S21 Ultra features a really longer battery life than Motorola Moto Z3, because it has 5000mAh of battery capacity against 3000mAh.

Although Galaxy S21 Ultra is a better device, it costs a lot more than Motorola Moto Z3, and it doesn't have such a good price and quality relation as Motorola Moto Z3. So if you need that extra features, you can buy the Galaxy S21 Ultra, otherwise you can save some dollars and buy the Motorola Moto Z3, resigning a couple features and specifications.