Skip to content

Xiaomi Amazfit T-Rex vs Samsung Gear 2 (SM-R380)

Side by side comparison between Xiaomi Amazfit T-Rex vs Samsung Gear 2 smartwatches, differences, pros, cons and full specifications. What's the better?

Xiaomi Amazfit T-Rex




32bit Single


(Non removable)

Samsung Gear 2 (SM-R380)




32bit Dual


(Non removable)

What's the better smartwatch? Xiaomi Amazfit T-Rex

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-Rex12 Advantages Xiaomi Amazfit T-RexvsGear 2 (SM-R380)9 Advantages Samsung Gear 2 (SM-R380)
+512MB LPDDR3Advantage
This RAM type is better and more efficient.
vs512MB LPDDR2
+58 grams (2.03 ounces)17%
vs68 grams (2.38 ounces)
+360x360 pixels27%
Higher resolution screen
vs320x320 pixels
+392 PPI41%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs278 PPI
+Ambient Light sensorAdvantage
Sensors help you use the device
vsNot supported
Sensors help you use the device
vsNot supported
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
+A-GPS, GeoTagging, GLONASSAdvantage
It's harder to lose yourself in the city with GPS on your device
vsNot supported
+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
vs4.0 + A2DP
+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
+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+10 millimeters (0.39 inches)35%
AMOLEDvs+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
Larger screen
Not supportedvs+(back) 2MPAdvantage
With a camera you can take pictures anywhere
Not supportedvs+HD (1280x720)Advantage
More image quality for recording videos with the primary camera
10 appsvs+1500 apps149 times
More apps available to download and use
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
Not supportedvs+Hands-free callingAdvantage
Hands-free calling is useful when you are driving and on other occasions
Not supportedvs+802.11 b/g/n (2.4Ghz)Advantage
WiFi 802.11 b/g/n (2.4Ghz) is newer and faster

10 Common items in both devices
4GB (2GB available)
16 million
Not supported
Heart rate
+3 specs and more in the table below

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

Highlight differencesClear highlight

📱 Model features

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
ModelAmazfit T-RexGear 2 (SM-R380)
Other model namesMi Amazfit TRexSamsung Gear 2 R380, Samsung SM-R380 Gear 2
Country or region available(Global, International)
(Global, International)
(Global, International)
(Global, International)
Release date1/9/2020, Announced: 1/1/20204/1/2014
Depth13.5 millimeters (0.53 inches)10 millimeters (0.39 inches)
Size (width x height)47.47 x 47.47 millimeters (1.87 x 1.87 in)36.9 x 58.4 millimeters (1.45 x 2.3 in)
Weight58 grams (2.03 ounces)68 grams (2.38 ounces)
Build, materialsPlastic body, glass frontfeature not registered
Protection against water and others5 ATM: 50 meters waterproofWaterproof (IP?)

🤖 Operating System

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
System versionProprietary OSTizen 2.2.1
Firmware updatefeature not registeredfeature not registered
User InterfaceRTOSfeature not registered

⚙️ Processor

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Chipset32bit32bit - Samsung Exynos 2 Dual 3250 (28nm)
CPUSingle-Core, 1 processor:
Dual-Core, 1 processor:
1GHz Dual-Core ARM Cortex-A7
GPU graphical controllerfeature not registeredARM Mali-400 MP2 400Mhz
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
RAM memory512MB LPDDR3512MB LPDDR2
Internal storage4GB (2GB available)
4GB (2GB available)
External storageNot supportedNot supported

📲 Display

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Display typeAMOLEDSuper AMOLED
Screen size1.3" inches1.63" inches
Screen-to-body ratio~24.2% (screen-to-body ratio)~39.8% (screen-to-body ratio)
Display resolution360x360 pixels320x320 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)392 PPI278 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Not supported
Display features60Hzfeature not registered

📶 Mobile networks

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Dual-SIMNot supportedNot supported
SIM cardNot supportedNot supported
Maximum download/uploadfeature not registeredfeature not registered
Network technologyfeature not registeredfeature not registered
Frequency, bandsExpand band detailsCollapse details
GSM MHz bandNot supportedNot supported
Primary 2G networkNot supportedNot supported
Primary 3G networkNot supportedNot supported
Primary 4G networkNot supportedNot supported
Primary 5G networkNot supportedNot supported
Primary data networkNot supportedNot supported
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported

📷 Camera

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Back camera (main camera)Not supported2 megapixels
Main camera resolutionNot supported1600x1200 pixels
Video recording (primary)Not supportedHD (1280x720)
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 supportedAutofocus
Touch focusNot supportedSupported
Image stabilizationNot supportedNot supported
ZoomNot supportedOnly digital zoom
Face/smile detectionNot supportedNot supported
BSI sensorNot supportedNot supported
HDRNot supportedNot supported
Camera extrasfeature not registeredfeature not registered

📸 Front camera

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
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

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Loudspeakerfeature not registeredSupported
Active noise cancellationNot supportedNot supported
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsfeature not registeredMP4, H.264, H.263
Audio formatsfeature not registeredMP3, WAV, eAAC+

🔌 Connectivity

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
USBNot supportedNot supported
Audio outputNot supportedNot supported
TV outputNot supportedNot supported
Bluetooth5.0 + A2DP/LE4.0 + A2DP
WiFiNot supported802.11 b/g/n (2.4Ghz)
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSNot supported
NFCNot supportedNot supported
Infrared portNot supportedSupported

🧭 Sensors

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Ambient Light sensor
Heart rate
Heart rate
Vibrating alertSupportedSupported

🔋 Battery

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Battery typeLiPo: Li-Ion polymer (Non removable)Li-Ion: Lithium-Ion (Non removable)
Battery capacity390 mAh300 mAh
Charger, watts Standard charging
Magnetic charging (dock)
Standard charging
Talk time autonomy20 hoursfeature not registered
Standby480 hours (20 days)72 hours (3 days)

➕ Other features

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
Call controlNot supportedVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), E-mailSMS, MMS, E-mail, Push mail
Hands-free callingNot supportedSupported
Video callingNot supportedNot supported
Ringtonesfeature not registeredPolyphonic and customized
Web browserNot supportedNot supported
Antennafeature not registeredNot supported
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: Charcoal Black, Gold Brown, Orange
- WatchON Remote
- S-Voice
- Watch compatible with Android 4.3 or higher
- IP67 certified: dust and water resistant up to 1m and 30min

☢️ Radiation rate

Xiaomi Amazfit T-RexSamsung Gear 2 (SM-R380)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.122W/kg (head), 0.02W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registered0.09W/kg (head), 0.02W/kg (body)

We use cookies to provide and improve our services. By using our site, you consent to cookies. See more details: Privacy policy.