OPPO A78 vs Xiaomi Poco X8 Pro Max vs Xiaomi 15T Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Differences only
7.4
Xiaomi Poco X8 Pro Max
6.6
Xiaomi 15T
OPPO A78 Xiaomi Poco X8 Pro Max Xiaomi 15T
Released · Jan 07, 2023
Released · Mar 17, 2026
Released · Sep 24, 2025
6.6-inch · 1612x720px
6.8-inch · 2772x1280px
6.8-inch · 2772x1280px
Dual camera
Dual camera
Triple camera
4GB · 128GB
12GB · 256GB
12GB · 256GB
5000 mAh
8500 mAh
5500 mAh
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Availability

Officially announced
Mar 17, 2026 Sep 24, 2025
Prices (MSRP)
12GB/256GB - $469 15GB/256GB - €649

Design

Dimensions
6.45 x 2.96 x 0.31 inches
163.8 x 75.1 x 8 m
6.41 x 3.07 x 0.32 inches (~0.41 inches with camera bump)
162.9 x 77.9 x 8.2 mm (~10.30 mm with camera bump)
6.43 x 3.07 x 0.30 inches
163.2 x 78 x 7.5 mm
Weight
6.63 oz / 188.0 g 7.69 oz / 218.0 g 6.84 oz / 194.0 g
Materials
Back: Glass
Frame: Aluminum
Back: Glass (Corning Gorilla Glass 7i)
Frame: Plastic
Resistance
Splash, Dust; IP54 Water, Dust; IP68 Water, Dust; IP68
Biometrics
Fingerprint (touch) Ultrasonic in-screen fingerprint Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Glowing Black, Glowing Purple Black, Gray, Rose Gold

Display

Size
6.6-inch, 83.93% screen-to-body 6.8-inch, 90.22% screen-to-body 6.8-inch, 89.94% screen-to-body
Type
IPS LCD, 90Hz, 600 nits AMOLED, 120Hz, 3500 nits AMOLED, 120Hz, HDR10+, 3200 nits
Resolution
1612x720px, 20:9 ratio, 269 PPI 2772x1280px, 447 PPI 2772x1280px, 20:9 ratio, 447 PPI
PhoneArena Display Test
Bright Max (20% APL)
Untested 3362 (Excellent) 3264 (Excellent)
Bright Min
Untested 1.9 (Good) 1.9 (Good)

Hardware

System chip
Mediatek Dimensity 700 (7 nm) MediaTek Dimensity 9500 (3 nm) Mediatek Dimensity 8400 Ultra (4 nm)
Processor
Octa-core
2x2.2GHz Cortex-A76
6x2.0G​Hz Cortex-A5
Octa-core
1x4.21GHz C1-Ultra
3x3.5GHz C1-Premium
4x2.7 GHz C1-Pro
Octa-core
1x3.35GHz Cortex-A725
3x3.0​0GHz Cortex-A725
4x2.1​0GHz Cortex-A725
GPU
Mali-G57 MC2 Mali G1-Ultra Mali-G720 MC7
Memory
4GB/128GB 12GB/256GB
12GB/512GB
12GB/256GB (UFS 4.1)
12GB/512GB
Storage expansion
microSDXC not expandable
OS
Android (14, 13, 12) Android (16) Android (15)
PhoneArena Performance Test
GeekBench 6 Single
Untested 2636 1614
GeekBench 6 Multi
Untested 8334 6446
3D Mark High
Untested 4194 3958
3D Mark Low
Untested 3416 2980

Battery

Type
5000 mAh 8500 mAh, Si - Carbon 5500 mAh, Li - Ion
Charge speed
Wired: 33.0W Wired: 100.0W Wired: 67.0W
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Battery Life Estimate
10h 21min
Browsing
26h 6min
Video
15h 26min
Gaming
9h 55min
Battery Life Estimate
7h 11min
Browsing
16h 32min
Video
10h 26min
Gaming
9h 57min

Camera

Rear
Dual camera Dual camera Triple camera
Main camera
50 MP (PDAF)
Aperture size: F1.8
Focal length: 27 mm
50 MP (OIS, PDAF)
Aperture size: F1.5
50 MP (OIS, PDAF)
Aperture size: F1.7
Focal length: 23 mm
Sensor size: 1/1.55"
Pixel size: 1.0 μm
Second camera
2 MP (Depth information) 8 MP (Ultra-wide)
Aperture size: F2.2
12 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 15 mm
Sensor size: 1/3.06"
Pixel size: 1.12 μm
Third camera
50 MP (Telephoto, PDAF)
Optical zoom: 2.0x
Aperture size: F1.9
Focal Length: 46 mm
Sensor size: 1/2.76"
Pixel size: 0.64 μm
Flash
LED LED LED
Video recording
Yes Yes 4K UHD (60 fps)
Front
8 MP 20 MP 32 MP
PhoneArena Camera Tests
N/A
Overall
N/A
Photo
N/A
Video
N/A
Overall
N/A
Photo
N/A
Video
136
Overall
144
Photo
129
Video

Connectivity & Features

Bluetooth
5.3 Yes 6.0
WLAN
Yes
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
Wi-Fi 6,Wi-Fi 7
Wi-Fi Direct, Hotspot
Wi-Fi 6E
Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0 Type-C Type-C
Sensors
Accelerometer, Ambient light sensor, Proximity sensor Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, NavIC, Cell ID, Wi-Fi positioning
Other
NFC NFC NFC, Infrared

Multimedia

Headphones
3.5mm jack No 3.5mm jack No 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Multiple speakers Earpiece, Multiple speakers
Screen mirroring
Wireless screen share Wireless screen share
Additional microphone(s)
Noise cancellation Noise cancellation

Cellular

5G Bands
5G Ready 5G Ready n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n40, n41, n48, n66, n77, n78, SA, NSA
LTE Bands
1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 20, 26, 28, 32, 66
TDD Bands
38, 40, 41, 42
3G Bands
1, 2, 4, 5, 6, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Dual Nano SIM Nano SIM Nano SIM, eSIM