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OPPO A78 5G vs Xiaomi Redmi Note 12

Updated Apr 2026phones
OPPO A78 5G
OPPO
OPPO A78 5G
$249
7.3/10
VS
Xiaomi Redmi Note 12
Xiaomi
Xiaomi Redmi Note 12
$179
8.1/10
Winner

The Verdict

Both phones share identical 5000 mAh batteries with 33W charging and the same 50 MP main camera, but they diverge significantly in display and processing power. The Redmi Note 12 features a superior 6.67-inch AMOLED display with 120Hz refresh rate and exceptional 1200 nits brightness, whereas the OPPO A78 5G offers a smaller 6.56-inch IPS LCD panel at 90Hz with 680 nits. The Xiaomi's Snapdragon 4 Gen 1 processor outperforms OPPO's Dimensity 700 in real-world performance and gaming, delivering noticeably smoother multitasking. However, the OPPO edges ahead with its IPX4 water resistance versus the Redmi's IP53 rating, plus it includes NFC as standard across variants. Storage flexibility favors Xiaomi, offering 64 GB, 128 GB options with multiple RAM configurations starting at 4 GB, while OPPO provides only 128 GB storage. The Redmi Note 12's 13 MP front camera beats OPPO's 8 MP sensor for selfies. At $179 versus $249, the Redmi Note 12 delivers exceptional value with its superior display technology and processor, making it the stronger choice for most users despite being the newer model with better specs overall. The OPPO justifies its premium only if water resistance matters significantly to you.

ValueNote 12
CameraNote 12
BatteryTie
DisplayNote 12
PerformanceNote 12

Who Should Buy

Buy the OPPO A78 5G if…

  • 5G connectivity at a budget-friendly price point
  • 33W SUPERVOOC fast charging is quick for the price segment
  • 5000 mAh battery provides solid two-day endurance

Buy the Xiaomi Redmi Note 12 if…

  • AMOLED 120Hz display at $179 is exceptional value
  • 5G connectivity at ultra-budget pricing
  • 33W fast charging for the 5000 mAh battery

Category Scores

OPPO A78 5G
Xiaomi Redmi Note 12
Value
7.4
8.5
Camera
7.5
7.8
Battery
7.5
7.5
Display
6.8
8.9
Performance
7.2
8.4

Pros & Cons

OPPO A78 5G

Pros

  • 5G connectivity at a budget-friendly price point
  • 33W SUPERVOOC fast charging is quick for the price segment
  • 5000 mAh battery provides solid two-day endurance
  • 90Hz refresh rate for smoother scrolling than 60Hz
  • IPX4 splash resistance adds basic water protection

Cons

  • IPS LCD lacks AMOLED vibrancy and contrast
  • Dimensity 700 is basic — struggles with demanding apps
  • 2 MP depth sensor is essentially useless
  • 8 MP front camera is low resolution for selfies
  • ColorOS includes pre-installed bloatware

Xiaomi Redmi Note 12

Pros

  • AMOLED 120Hz display at $179 is exceptional value
  • 5G connectivity at ultra-budget pricing
  • 33W fast charging for the 5000 mAh battery
  • IP53 splash resistance for basic protection
  • Lightweight and slim design at 188 g

Cons

  • Snapdragon 4 Gen 1 offers limited performance
  • Only a depth sensor as secondary camera — no ultrawide
  • 4 GB base RAM is very tight for multitasking
  • Video recording capped at 1080p@30fps
  • MIUI has ads and bloatware

Full Specifications

SpecOPPO A78 5GXiaomi Redmi Note 12
SoftwareAndroid 13 (ColorOS 13)Android 12 (MIUI 14)
Body
Weight188 g188 g
MaterialPlastic frame and backPlastic frame, glass front, plastic back
IP ratingIPX4IP53
Dimensions163.8 x 75.1 x 8.0 mm165.9 x 76 x 7.98 mm
Camera
Main camera50 MP, f/1.8, PDAF50 MP, f/1.8, PDAF
Depth2 MP, f/2.42 MP, f/2.4
Front camera8 MP, f/2.013 MP, f/2.4
Video1080p@30fps1080p@30fps
Memory
RAM4 GB / 8 GB4 GB / 6 GB / 8 GB
Storage options128 GB64 GB, 128 GB
Battery
Capacity5000 mAh5000 mAh
Charging33W SUPERVOOC33W wired
Wireless chargingNoNo
Display
Size6.56 inches6.67 inches
TypeIPS LCDAMOLED
Resolution2400 x 10802400 x 1080
Refresh rate90Hz120Hz
Brightness (nits)6801200
Processor
CPUOcta-core (2x2.2 GHz + 6x2.0 GHz)Octa-core (2x2.0 GHz + 6x1.8 GHz)
GPUMali-G57 MC2Adreno 619
ChipsetMediaTek Dimensity 700Qualcomm Snapdragon 4 Gen 1
Connectivity
5G
NFC
USBUSB-C 2.0USB-C 2.0
Wi-FiWi-Fi 5Wi-Fi 5
Bluetooth5.35.1

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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.

Explore more in phones, see all OPPO products or all Xiaomi products. View full details for the OPPO A78 5G or the Xiaomi Redmi Note 12.