Xiaomi Redmi Note 9 Pro 5G vs. Infinix S5 Pro: A Detailed Comparison

The Infinix S5 Pro and Xiaomi Redmi Note 9 Pro 5G represent different approaches to the budget smartphone market. The S5 Pro, while older, prioritizes endurance, while the Redmi Note 9 Pro 5G brings 5G connectivity and a substantial performance upgrade to the table. This comparison dissects their key differences to help you determine which device best suits your needs.
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🏆 Quick Verdict

For most users, the Xiaomi Redmi Note 9 Pro 5G is the clear winner. Its Snapdragon 750G chipset delivers significantly faster performance and 5G capabilities, while the 33W charging is a major convenience. The Infinix S5 Pro remains a viable option for those prioritizing maximum battery life above all else.

PHONES
Phone Names Infinix S5 Pro Xiaomi Redmi Note 9 Pro 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 3, 5, 8, 38, 40, 411, 3, 5, 7, 8, 34, 38, 39, 40, 41
5G bands-1, 3, 41, 78, 79 SA/NSA/Sub6
SpeedHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 MbpsHSPA, LTE, 5G
TechnologyGSM / HSPA / LTEGSM / CDMA / HSPA / EVDO / LTE / 5G
 -CDMA2000 1xEV-DO
Launch
Announced2020, March 06. Released 2020, March 132020, November 26
StatusDiscontinuedAvailable. Released 2020, December 01
Body
BuildGlass front, plastic back, plastic frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
Dimensions162.5 x 76.9 x 9 mm (6.40 x 3.03 x 0.35 in)165.4 x 76.8 x 9 mm (6.51 x 3.02 x 0.35 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight195 g (6.88 oz)215 g (7.58 oz)
 -IP53, dust and splash resistant
Display
Protection-Corning Gorilla Glass 5
Resolution1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size6.53 inches, 104.7 cm2 (~83.8% screen-to-body ratio)6.67 inches, 107.4 cm2 (~84.6% screen-to-body ratio)
TypeIPS LCDIPS LCD, HDR10, 120Hz, 450 nits (typ)
Platform
CPUOcta-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570)
ChipsetMediatek MT6765 Helio P35 (12 nm)Qualcomm SM7225 Snapdragon 750G 5G (8 nm)
GPUPowerVR GE8320Adreno 619
OSAndroid 10Android 10, MIUI 12
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (uses shared SIM slot)
Internal64GB 4GB RAM, 128GB 6GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
 eMMC 5.1UFS 2.2
Main Camera
FeaturesDual-LED flash, HDR, panoramaDual-LED dual-tone flash, HDR, panorama
Quad-108 MP, f/1.8, 26mm (wide), 1/1.52", 0.7µm, PDAF 8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro) Auxiliary lens
Triple48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF Auxiliary lenses-
Video1080p@30fps4K@30fps, 1080p@30/60fps, gyro-EIS
Selfie camera
Features-HDR, panorama
SingleMotorized pop-up 16 MP, f/2.0, (wide)16 MP, f/2.5, (wide), 1/3.06", 1.0µm
Video1080p@30fps1080p@30fps, gyro-EIS
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes, with stereo speakers
 -24-bit/192kHz audio
Comms
Bluetooth5.0, A2DP, LE5.1, A2DP, LE
Infrared port-Yes
NFCNoYes
PositioningGPSGPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5)
RadioFM radioUnspecified
USBmicroUSB 2.0, OTGUSB Type-C 2.0
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (rear-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, compass
 -Virtual proximity sensing
Battery
Charging-33W wired, 100% in 58 min
Type4000 mAhLi-Po 4820 mAh
Misc
ColorsNebula Black, Quetzal Cyan, VioletGray, Blue, Red/Mint
ModelsX660, X660C, X660BM2007J17C
PriceAbout 120 EURAbout 370 EUR
SAR0.79 W/kg (head)     0.90 W/kg (body)-
Tests
Battery life Endurance rating 106h -
Camera Photo / Video-
Display Contrast ratio: 1677:1 (nominal)-
Loudspeaker -29.5 LUFS (Average) -
Performance AnTuTu: 90446 (v7), 117533 (v8) GeekBench: 4226 (v4.4), 1039 (v5.1) GFXBench: 3.2fps (ES 3.1 onscreen)-

Infinix S5 Pro

  • Exceptional battery endurance (106h rating)
  • Lower price point (likely)
  • Adequate display for basic use

  • Outdated and slow Helio P35 chipset
  • Lacks 5G connectivity
  • Slow charging speeds (implied)

Xiaomi Redmi Note 9 Pro 5G

  • Significantly faster Snapdragon 750G processor
  • 5G connectivity for faster data speeds
  • 33W fast charging (0-100% in 58 minutes)

  • Likely shorter battery life than the S5 Pro
  • Potentially higher price
  • Battery capacity unknown

Display Comparison

The Infinix S5 Pro features a display with a 1677:1 contrast ratio and a measured peak brightness of 336 nits. While adequate for indoor use, this brightness falls short of modern standards. The Redmi Note 9 Pro 5G’s display specifications are not provided, but given its market positioning, it likely offers comparable or slightly better brightness. The S5 Pro’s contrast ratio is acceptable, but the lack of information regarding panel technology (IPS vs AMOLED) and refresh rate on either device limits a full assessment. Users prioritizing outdoor visibility will likely find the Redmi Note 9 Pro 5G a better experience, assuming a higher peak brightness.

Camera Comparison

Both phones are listed as having 'Photo / Video' capabilities, but specific details are lacking. Without sensor size, aperture, or image processing information, a direct comparison is difficult. However, given the Redmi Note 9 Pro 5G’s overall positioning, it’s reasonable to assume it features a more advanced camera system. The S5 Pro likely relies on software processing to enhance image quality, while the Redmi Note 9 Pro 5G likely benefits from a more capable image signal processor (ISP) within the Snapdragon 750G. The absence of details makes it impossible to assess low-light performance or video recording quality.

Performance

The performance gap between these two devices is substantial. The Infinix S5 Pro is powered by the Mediatek MT6765 Helio P35, a 12nm chipset with an octa-core CPU configuration split between 2.3 GHz and 1.8 GHz Cortex-A53 cores. This is a budget-oriented processor designed for basic tasks. In contrast, the Xiaomi Redmi Note 9 Pro 5G boasts the Qualcomm SM7225 Snapdragon 750G 5G, built on a more efficient 8nm process. Its octa-core CPU, with 2x2.2 GHz Kryo 570 and 6x1.8 GHz Kryo 570 cores, delivers significantly improved performance in both single-core and multi-core tasks. The Snapdragon 750G also includes a more capable GPU, making it far better suited for gaming and demanding applications. The 8nm process also contributes to better thermal management, reducing the likelihood of throttling under sustained load.

Battery Life

The Infinix S5 Pro boasts an endurance rating of 106 hours, indicating excellent battery life. This is a key strength of the device. The Redmi Note 9 Pro 5G’s battery capacity is unknown, but it compensates with 33W wired charging, achieving a 100% charge in just 58 minutes. While the S5 Pro likely offers longer runtimes on a single charge, the Redmi Note 9 Pro 5G’s fast charging significantly reduces downtime. Users who frequently find themselves away from a power outlet may prefer the S5 Pro, while those who value quick top-ups will appreciate the Redmi Note 9 Pro 5G.

Buying Guide

Buy the Infinix S5 Pro if you absolutely need the longest possible battery life and are primarily focused on basic tasks like calling, texting, and light social media. You'll be sacrificing performance and future-proofing. Buy the Xiaomi Redmi Note 9 Pro 5G if you want a phone that can handle more demanding apps, offers 5G connectivity for faster data speeds, and charges much faster, even if it means slightly reduced battery endurance.

Frequently Asked Questions

❓ Is the Snapdragon 750G in the Redmi Note 9 Pro 5G powerful enough for demanding games like PUBG or Call of Duty?
Yes, the Snapdragon 750G is a capable mid-range chipset that can handle PUBG and Call of Duty at medium to high settings. While it won't deliver the same performance as flagship processors, it provides a smooth and enjoyable gaming experience, especially considering the price point.
❓ How much faster is the 33W charging on the Redmi Note 9 Pro 5G compared to the Infinix S5 Pro's charging speed?
The Redmi Note 9 Pro 5G's 33W charging is significantly faster. It can charge from 0-100% in 58 minutes. The Infinix S5 Pro's charging speed is not specified, but it's likely to take several hours to fully charge, making the Redmi Note 9 Pro 5G much more convenient for users who need a quick power boost.
❓ Will the Infinix S5 Pro receive future software updates?
Given its age, the Infinix S5 Pro is unlikely to receive major Android version updates. Security patches may be infrequent. The Redmi Note 9 Pro 5G, being a newer device, is more likely to receive ongoing software support.