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Umidigi G100x vs Xiaomi Redmi 15a

What G100x does better (5) and where Redmi 15a wins (7) — every spec side by side.

Umidigi G100x
Umidigi · 2026G100x
5.5Score
5 advantages
vs
Xiaomi Redmi 15a
Xiaomi · 2026Redmi 15a
6.2Score
7 advantages≈ $130
Higher score
5.4Display6.3
3.8Camera3.8
6.8Battery6.9
2.8Features4.6
Dimensions

Size comparison

G100xRedmi 15a
78 × 1718.179.5 × 171.68.2
G100xRedmi 15aDifference
Height171 mm171.6 mm−0.6 mm
Width78 mm79.5 mm−1.5 mm
Thickness8.1 mm8.2 mm−0.1 mm
Weight193 g210 g−17 g

Drawn to the same scale from the official dimensions (front and side).

Why is G100x better than Redmi 15a?

  1. Wired charging20 W vs 15 W+33%
  2. Water resistance (IPx)IPx3 vs IPx2+50%
  3. Storage (base)128 GB vs 64 GB2×
  4. Weight193 g vs 210 g+9%
  5. Pixel density260 ppi vs 254 ppi+2%

Why is Redmi 15a better than G100x?

  1. RAM4 GB vs 6 GB+50%
  2. Battery capacity5,200 mAh vs 6,300 mAh+21%
  3. 5GNo · G100x: Yes
  4. Peak brightness450 nits vs 800 nits+78%
  5. Process12 nm vs 6 nm2×
  6. CPU frequency2 GHz vs 2.2 GHz+10%
  7. Bluetooth5.2 vs 5.4+4%
Specifications

Side by side

Xiaomi Redmi 15aXiaomi Redmi 15a≈ $1306.2
Design
Weight193 g210 g
Thickness8.1 mm8.2 mm
Height171 mm171.6 mm
Width78 mm79.5 mm
FramePlasticPlastic
BackPlasticPlastic
Ingress protectionIP53IP52
Water resistance (IPx)IPx3IPx2
ColoursSand Black, Sand Silver, Sand GreenBlack, Blue, Purple
Display
Screen size6.9″6.9″
PanelIPS LCDIPS LCD
OLED panelNoNo
Resolution (width)720 px720 px
Resolution (height)1,640 px1,600 px
Pixel density260 ppi254 ppi
Refresh rate120 Hz120 Hz
Peak brightness450 nits800 nits
Screen-to-body ratio84.8%84.3%
Performance
ChipsetMediatek Helio G81Unisoc T8300
Chip makerMediaTekUnisoc
Process12 nm6 nm
CPU cores88
CPU frequency2 GHz2.2 GHz
GPUMali-G52 MC2Mali-G57 MC2
Geekbench 6 (multi-core)—2,074
Memory
RAM4 GB6 GB
Storage (max)128 GB128 GB
Storage (base)128 GB64 GB
Storage type—UFS 2.2
Memory card slotYesYes
Camera
Main camera32 MP32 MP
Main camera aperture—f/2
Rear cameras11
Optical stabilisationNoNo
Ultra-wide cameraNoNo
Telephoto cameraNoNo
Max video1080p1080p
Selfie camera8 MP8 MP
4K selfie videoNoNo
Battery
Battery capacity5,200 mAh6,300 mAh
Battery type—Li-Po
Wired charging20 W15 W
Wireless chargingNoNo
Connectivity
5GNoYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 5Wi-Fi 5
Bluetooth5.25.4
NFCNoNo
USBUSB Type-CUSB Type-C 2.0
USB version—2
Satellite navigationGLONASS, GALILEO, BDSGLONASS, GALILEO, BDS
Features
Stereo speakersNoNo
3.5 mm headphone jackYesYes
Fingerprint sensorSideSide
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, compass
Software
OS at launchAndroid 15Android 16
PlatformAndroidAndroid
Interface—HyperOS 3
Major OS updates promised—4
To compare: 0up to 4 models
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