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UleFone Armor 29 Ultra vs Vivo X300 Pro

What Armor 29 Ultra does better (10) and where X300 Pro wins (18) — every spec side by side.

UleFone Armor 29 Ultra
UleFone · 2025Armor 29 Ultra
9.1Score
10 advantages≈ $820
vs
Vivo X300 Pro
Vivo · 2025X300 Pro
9.6Score
18 advantages≈ $870
Higher score
8.6Display9.1
7.6Camera9.7
9.7Battery8.2
8.5Features9.7
Dimensions

Size comparison

Armor 29 UltraX300 Pro
85.6 × 177.333.875.5 × 161.28
Armor 29 UltraX300 ProDifference
Height177.3 mm161.2 mm+16.1 mm
Width85.6 mm75.5 mm+10.1 mm
Thickness33.8 mm8 mm+25.8 mm
Weight688 g226 g+462 g

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

Why is Armor 29 Ultra better than X300 Pro?

  1. Battery capacity21,200 mAh vs 6,510 mAh3.3×
  2. Wired charging120 W vs 90 W+33%
  3. Storage (base)1,024 GB vs 256 GB4×
  4. Endurance per cycle112 h vs 48 h2.3×
  5. Memory card slotYes · X300 Pro: No
  6. 3.5 mm headphone jackYes · X300 Pro: No
  7. Energy classA vs B
  8. Repairability classB vs C
  9. Drop resistance classA vs B
  10. Rear cameras3 vs 2+50%

Why is X300 Pro better than Armor 29 Ultra?

  1. Weight688 g vs 226 g3×
  2. Peak brightness2,200 nits vs 4,500 nits2×
  3. Optical stabilisationNo · Armor 29 Ultra: Yes
  4. Telephoto cameraNo · Armor 29 Ultra: Yes
  5. Wireless chargingNo · Armor 29 Ultra: Yes
  6. Stereo speakersNo · Armor 29 Ultra: Yes
  7. Thickness33.8 mm vs 8 mm4.2×
  8. 4K video frame rate30 fps vs 120 fps4×
  9. CPU frequency3.4 GHz vs 4.21 GHz+24%
  10. 4K selfie videoNo · Armor 29 Ultra: Yes
  11. eSIMNo · Armor 29 Ultra: Yes
  12. Pixel density395 ppi vs 452 ppi+14%
Specifications

Side by side

Vivo X300 ProVivo X300 Pro≈ $8709.6
Design
Weight688 g226 g
Thickness33.8 mm8 mm
Height177.3 mm161.2 mm
Width85.6 mm75.5 mm
Frame—Aluminium
Back—Glass
Ingress protectionIP68IP68
Water resistance (IPx)IPx8IPx8
Glass protectionCorning Gorilla Glass 5Armor Glass
ColoursBlackPhantom Black, Mist Blue, Dune Brown, Cloud White
Display
Screen size6.7″6.8″
PanelAMOLEDLTPO AMOLED
OLED panelYesYes
LTPO (adaptive 1–120 Hz)—Yes
Resolution (width)1,080 px1,260 px
Resolution (height)2,400 px2,800 px
Pixel density395 ppi452 ppi
Refresh rate120 Hz120 Hz
Peak brightness2,200 nits4,500 nits
Measured brightness—2,113 nits
Screen-to-body ratio70.8%91.6%
HDR—Yes
Performance
ChipsetMediatek Dimensity 9300+Mediatek Dimensity 9500
Chip makerMediaTekMediaTek
Process4 nm3 nm
CPU cores88
CPU frequency3.4 GHz4.21 GHz
GPUImmortalis-G720 MC12Arm G1-Ultra
AnTuTu score—2,982,875
Geekbench 6 (multi-core)—10,264
3DMark Wild Life Extreme—7,263
Memory
RAM16 GB16 GB
Storage (max)1,024 GB1,024 GB
Storage (base)1,024 GB256 GB
Storage typeUFS 4.0UFS 4.1
Memory card slotYesNo
Camera
Main camera50 MP50 MP
Main camera aperturef/1.9f/1.6
Main sensor size1"1/1.28"
Rear cameras32
Optical stabilisationNoYes
Ultra-wide cameraYesYes
Telephoto cameraNoYes
Optical zoom—3.7×
Max video8K8K
4K video frame rate30 fps120 fps
Selfie camera50 MP50 MP
4K selfie videoNoYes
Battery
Battery capacity21,200 mAh6,510 mAh
Battery typeLi-PoSi/C
Active use (test)—12.8 h
Wired charging120 W90 W
Charged in 30 min60%69%
Wireless chargingNoYes
Wireless charging power—40 W
Reverse wireless charging—Yes
Connectivity
5GYesYes
eSIMNoYes
Dual SIMYesYes
Wi-Fi standardWi-Fi 7Wi-Fi 7
Bluetooth5.45.4
NFCYesYes
USBUSB Type-C 3.2 Gen2USB Type-C 3.2
USB version3.23.2
Video output—Yes
Satellite messaging—Yes
Infrared port—Yes
Dual-band GPS—Yes
Satellite navigationGLONASS, GALILEO, BDS, QZSS, NavICGLONASS, GALILEO, BDS, QZSS, NavIC
Features
Stereo speakersNoYes
3.5 mm headphone jackYesNo
Loudspeaker loudness—-24.8 LUFS
Fingerprint sensorSideUnder display, ultrasonic
BarometerYes—
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Software
OS at launchAndroid 15Android 16
PlatformAndroidAndroid
Interface—OriginOS 6
Major OS updates promised—5
EU label
Energy classAB
Battery charge cycles1,0001,200
Endurance per cycle112 h48 h
Repairability classBC
Drop resistance classAB
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