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Xiaomi Amazfit T-Rex vs Samsung Gear S (3G SM-R750A)

Side by side comparison between Xiaomi Amazfit T-Rex vs Samsung Gear S smartwatches, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Gear S X Xiaomi Amazfit T-Rex 07Points
Xiaomi Amazfit T-Rex
Specifications Compare Models Pictures
1.3"
AMOLED

360x360

N/A
512MB
RAM

Single-core

390
mAh

(Non removable)

vs
13Points Samsung Gear S (3G SM-R750A) Compare Xiaomi Amazfit T-Rex X
Samsung Gear S (3G SM-R750A)
Specifications Compare Models Pictures
2"
AMOLED

360x480

N/A
512MB
RAM

Dual-core

300
mAh

(Non removable)

What's the better smartwatch? Samsung Gear S (3G SM-R750A)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Amazfit T-Rex} 7 Advantages Xiaomi Amazfit T-Rex vs Gear S (3G SM-R750A)} 13 Advantages Samsung Gear S (3G SM-R750A)
+58 grams (2.03 ounces)16%
Lighter		vs67 grams (2.35 ounces)
+392 PPI31%
Crisper display of text, images and videos because it has more pixels per inch (ppi)		vs300 PPI
+PedometerAdvantage
Sensors help you use the device		vsNot supported
+SpO2Advantage
Sensors help you use the device		vsNot supported
+390 mAh30%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use		vs300 mAh
+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster		vs4.1 + A2DP
+5 ATMAdvantage
Protection against water allows you talk to your friends in the rain, for example		vsWaterproof (IP?)
13.5 millimeters (0.53 inches)vs+12.5 millimeters (0.49 inches)8%
Thinner
AMOLEDvs+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
360x360 pixelsvs+360x480 pixels33%
Higher resolution screen
1.3"vs+2"54%
Larger screen
10 appsvs+1500 apps149 times
More apps available to download and use
Not supportedvs+3G+ HSPA+Advantage
The 3G+ HSPA+ network is newer and faster
(Not supported) vs+(3G+ HSPA+) 21 MbpsAdvantage
Faster for surfing the internet and download files
Not supportedvs+BarometerAdvantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
Not supportedvs+Proximity sensorAdvantage
Sensors help you use the device
Not supportedvs+UV radiationAdvantage
Sensors help you use the device
Not supportedvs+802.11 b/g/n [wifi4]Advantage
WiFi 802.11 b/g/n [wifi4] is newer and faster
Not supportedvs+MicroUSB 2.0Advantage
Newer and faster USB version for transferring photos, mp3 or data.
13 Common items in both devices
512MB LPDDR3 / 512MB
4GB (2GB available)
16 million
Capacitive
Multitouch
Accelerometer
Ambient light sensor
+6 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences Clear highlight

📱 Model features

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Change model 
ModelAmazfit T-RexGear S (3G SM-R750A)
Other model namesMi Amazfit TRexAT&T Samsung Gear S SM-R750A, Samsung SM-R750A
Country or region available(Global, International)
(Global, International)		USA
USA
BrandXiaomiSamsung
Release date1/9/2020, Announced: 1/1/202011/1/2014
Depth13.5 millimeters (0.53 inches)12.5 millimeters (0.49 inches)
Size (width x height)47.47 x 47.47 millimeters (1.87 x 1.87 in)39.9 x 58.1 millimeters (1.57 x 2.29 in)
Weight58 grams (2.03 ounces)67 grams (2.35 ounces)
Build, materialsPlastic body, glass frontfeature not registered
Protection against water and others5 ATM: 50 meters waterproofWaterproof (IP?)

📲 Display

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Display typeAMOLEDSuper AMOLED
Screen size1.3" inches2" inches
Screen-to-body ratio~24.2% (screen-to-body ratio)~53.4% (screen-to-body ratio)
Display resolution360x360 pixels360x480 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)392 PPI300 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Gorilla Glass 3
Refresh rate60Hzfeature not registered
Display featuresNot supportedfeature not registered

🤖 Operating System

Amazfit T-RexSamsung Gear S (3G SM-R750A)
System versionProprietary OSTizen 2.3
Firmware updatefeature not registeredfeature not registered
User InterfaceRTOSfeature not registered

⚙️ Processor

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Chipset32bit32bit: Samsung Exynos 4212
CPUSingle-core, 1 processor:
Single-core		Dual-core, 1 processor:
2x 1GHz ARM Cortex-A9 (Dual-core)
GPU graphical controllerfeature not registeredARM Mali-400 MP4 400Mhz
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Amazfit T-RexSamsung Gear S (3G SM-R750A)
RAM memory512MB LPDDR3512MB
Internal storage4GB (2GB available)
eMCP		4GB (2GB available)
External storageNot supportedNot supported

📶 Mobile networks

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Dual-SIMNot supportedNot supported
SIM cardNot supported1 slot (Single-SIM)
nano-SIM (4FF)
Maximum Download / Uploadfeature not registered21/5.76 Mbps
Network technologyfeature not registered2G, 3G
Frequency, bands Expand band details Collapse details
GSM MHz bandNot supportedDual-Band 850/1900
Primary 2G networkNot supportedGSM 850/1900
Primary 3G networkNot supportedUMTS 850/1900
Primary 4G networkNot supportedNot supported
Primary 5G networkNot supportedNot supported
Primary data networkNot supportedGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported

📷 Camera

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Back camera (main camera)Not supportedNot supported
Main camera resolutionNot supportedNot supported
Video recording (primary)Not supportedNot supported
FlashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusNot supportedNot supported
Touch focusNot supportedNot supported
Image stabilizationNot supportedfeature not registered
ZoomNot supportedNot supported
Face/smile detectionNot supportedNot supported
BSI sensorNot supportedNot supported
HDRNot supportedNot supported
Camera extrasfeature not registeredfeature not registered

📸 Front camera

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Front camera (secondary)Not supportedNot supported
Front camera resolutionNot supportedNot supported
Video recording (secondary)Not supportedNot supported
Front flashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered

🔉 Sound and multimedia

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Loudspeakerfeature not registeredSupported
Active noise cancellationNot supportedNot supported
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsfeature not registeredfeature not registered
Audio formatsfeature not registeredMP3, WAV, WMA, eAAC+

🔌 Connectivity

Amazfit T-RexSamsung Gear S (3G SM-R750A)
USBNot supportedMicroUSB 2.0
Audio outputNot supportedNot supported
TV outputNot supportedNot supported
Bluetooth5.0 + A2DP/LE4.1 + A2DP
WiFiNot supported802.11 b/g/n [wifi4] (2.4GHz)
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS
NFCNot supportedNot supported
Infrared portNot supportedSupported

🧭 Sensors

Amazfit T-RexSamsung Gear S (3G SM-R750A)
SensorsAccelerometer
Ambient light sensor
Compass
Heart rate
Pedometer
SpO2		Accelerometer
Ambient light sensor
Barometer
Compass
Gyroscope
Heart rate
Proximity sensor
UV radiation
Vibrating alertSupportedSupported

🔋 Battery

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Battery typeLiPo: li-ion polymer (Non removable)Li-Ion: lithium-ion (Non removable)
Battery capacity390 mAh300 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingMagnetic charging (dock)feature not registered
Talk time autonomy20 hours5 hours
Standby480 hours (20 days)96 hours (4 days)

➕ Other features

Amazfit T-RexSamsung Gear S (3G SM-R750A)
Call controlNot supportedVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), E-mailSMS (T9), E-mail
Hands-free callingNot supportedSupported
Video callingNot supportedNot supported
Ringtonesfeature not registeredPolyphonic and customized
Web browserNot supportedNot supported
Antennafeature not registeredInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous• Colors: Black, Gray, Camouflage, Army green, Khaki
• Watch band: 22mm
• BioTracker PPG
• 14 sports mode
• AppZepp app
• Compatible with Android 5.0/iOS 10 and above		• Colors: Black, White
• S-Voice
• S-Health
• IP67 certified: dust and water resistant up to 1 meter and 30min

☢️ Radiation rate

Amazfit T-RexSamsung Gear S (3G SM-R750A)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.92W/kg (head), 0.91W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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