BLU F91 vs Xiaomi Poco X4 Pro 5G: A Detailed Comparison of Budget 5G Contenders

The BLU F91 and Xiaomi Poco X4 Pro 5G represent compelling options in the increasingly competitive budget 5G smartphone market. The F91 aims to deliver strong processing power with its Mediatek Dimensity 810, while the Poco X4 Pro 5G prioritizes a balanced experience with the Snapdragon 695 and a focus on rapid charging. This comparison dissects their key differences to help you determine which device best suits your needs.
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🏆 Quick Verdict

For the average user prioritizing fast charging and a generally smoother, more optimized experience, the Xiaomi Poco X4 Pro 5G is the better choice. Its 67W charging significantly outperforms the BLU F91’s 18W, and the Snapdragon 695 offers a more refined software experience despite slightly lower raw CPU clock speeds.

PHONES
Phone Names BLU F91 Xiaomi Poco X4 Pro 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 - Global
4G bands2, 4, 5, 12, 13, 17, 25, 26, 41, 66, 711, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 40, 41 - Global
5G bands2, 5, 25, 41, 66, 71, 77 SA/NSA/Sub61, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA - Global
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
 -1, 3, 5, 8, 28, 40, 78 SA/NSA - India
Launch
Announced2022, April 202022, February 28
StatusAvailable. Released 2022, April 20Available. Released 2022, March 23
Body
Build-Glass front (Gorilla Glass 5), glass back, plastic frame
Dimensions168.7 x 76.8 x 8.9 mm (6.64 x 3.02 x 0.35 in)164.2 x 76.1 x 8.1 mm (6.46 x 3.00 x 0.32 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight209 g (7.37 oz)205 g (7.23 oz)
 -IP53, dust and splash resistant
Display
Protection-Corning Gorilla Glass 5
Resolution1080 x 2460 pixels (~395 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size6.8 inches, 109.8 cm2 (~84.8% screen-to-body ratio)6.67 inches, 107.4 cm2 (~86.0% screen-to-body ratio)
TypeIPS LCDSuper AMOLED, 120Hz, 700 nits, 1200 nits (peak)
Platform
CPUOcta-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)Octa-core (2x2.2 GHz Kryo 660 Gold & 6x1.7 GHz Kryo 660 Silver)
ChipsetMediatek Dimensity 810 (6 nm)Qualcomm SM6375 Snapdragon 695 5G (6 nm)
GPUMali-G57 MC2Adreno 619
OSAndroid 11Android 11, MIUI 13 for POCO
Memory
Card slotmicroSDXCmicroSDXC (uses shared SIM slot)
Internal128GB 8GB RAM64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
 -UFS 2.2
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Quad48 MP, f/1.8, (wide) 1/2.0", 0.8µm, PDAF 5 MP, f/2.2, 115˚ (ultrawide) 2 MP (macro) Auxiliary lens-
Single16 MP, f/2.016 MP, f/2.5, (wide), 1/3.06" 1.0µm
Triple-108 MP, f/1.9, 26mm (wide), 1/1.52", 0.7µm, PDAF - Global version 64 MP, f/1.8, 26mm (wide), 0.7µm, PDAF - India version 8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)
Video4K@30fps, 1080p@30fps1080p@30fps
Selfie camera
Features-HDR, panorama
Single16 MP, f/2.016 MP, f/2.5, (wide), 1/3.06" 1.0µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes, with stereo speakers
 -24-bit/192kHz audio
Comms
Bluetooth5.1, A2DP, LE5.1, A2DP, LE
Infrared port-Yes
NFCYesYes (market/region dependent)
PositioningGPSGPS, GLONASS, BDS, GALILEO
RadioFM radioFM radio
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 b/g/n/ac, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging18W wired 10W wireless Reverse wired67W wired, PD3.0, QC3, 70% in 22 min, 100% in 41 min
TypeLi-Po 5000 mAhLi-Po 5000 mAh
Misc
ColorsBlueLaser Black, Laser Blue, Poco Yellow
Models-2201116PG
PriceAbout 280 EUR€ 160.40 / $ 419.99 / £ 255.00 / ₹ 12,940
SAR-1.06 W/kg (head)     1.09 W/kg (body)
SAR EU-0.60 W/kg (head)     0.96 W/kg (body)
Tests
Battery life- Endurance rating 119h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -26.8 LUFS (Good)
Performance- AnTuTu: 335353 (v8), 384646 (v9) GeekBench: 2063 (v5.1) GFXBench: 17fps (ES 3.1 onscreen)

BLU F91

  • Faster CPU clock speeds (potentially better for single-core tasks)
  • Wireless charging support
  • Reverse wired charging capability

  • Slower charging speed (18W)
  • Less refined software experience (potentially)
  • Limited camera information

Xiaomi Poco X4 Pro 5G

  • Significantly faster 67W charging
  • Potentially better thermal management
  • More optimized software experience

  • Slightly lower CPU clock speeds
  • No wireless charging
  • No reverse charging

Display Comparison

Both devices share an 'Infinite' (nominal) contrast ratio, suggesting typical IPS LCD characteristics. However, detailed display specs like peak brightness, color gamut coverage, and refresh rate are missing for the BLU F91. The Poco X4 Pro 5G’s display, while also lacking detailed specs, benefits from Xiaomi’s established display calibration expertise, likely resulting in more accurate colors and better viewing angles. Without further data on the F91, the Poco X4 Pro 5G holds an advantage based on brand reputation and potential for better display quality.

Camera Comparison

Both phones are listed as having 'Photo / Video' capabilities, but specific details are absent. Without sensor size, aperture, or image processing details, a direct comparison is impossible. However, Xiaomi’s image processing algorithms are generally more refined than those found on BLU devices, suggesting the Poco X4 Pro 5G will likely produce more visually appealing photos in a wider range of conditions. The lack of detail on the BLU F91’s camera system makes it difficult to assess its capabilities beyond basic smartphone photography.

Performance

The BLU F91’s Mediatek Dimensity 810 (6nm) features a dual-cluster CPU configuration with 2x2.4 GHz Cortex-A76 cores and 6x2.0 GHz Cortex-A55 cores. The Poco X4 Pro 5G utilizes the Qualcomm Snapdragon 695 5G (6nm) with 2x2.2 GHz Kryo 660 Gold cores and 6x1.7 GHz Kryo 660 Silver cores. While the Dimensity 810 boasts slightly higher peak clock speeds, the Snapdragon 695 often demonstrates superior sustained performance and thermal management due to Qualcomm’s optimized CPU architecture and software integration. The Snapdragon 695’s Adreno 619 GPU is also generally more efficient for gaming than the Mali-G52 MC2 found in the Dimensity 810. The Poco X4 Pro 5G is likely to offer a smoother, more consistent gaming experience.

Battery Life

Both devices achieve an endurance rating of 119 hours, indicating similar overall battery life under typical usage. However, the charging capabilities are drastically different. The BLU F91 offers 18W wired charging, 10W wireless charging, and reverse wired charging. The Poco X4 Pro 5G, in contrast, boasts a blazing-fast 67W wired charging with support for PD3.0 and QC3, achieving 70% charge in 22 minutes and 100% in 41 minutes. This charging speed is a significant advantage for the Poco X4 Pro 5G, minimizing downtime and offering a much more convenient charging experience. The inclusion of wireless and reverse charging on the F91 is a plus, but the slower speeds diminish its practical benefit.

Buying Guide

Buy the BLU F91 if you prioritize raw CPU performance for demanding tasks and appreciate the convenience of wireless charging, even if it's slower. This phone is ideal for users who frequently engage in CPU-intensive applications or prefer a more flexible charging ecosystem. Buy the Xiaomi Poco X4 Pro 5G if you value fast charging, a potentially more stable software experience, and a balanced overall package. This phone is best for users who want a reliable daily driver with minimal downtime spent tethered to a charger.

Frequently Asked Questions

❓ Does the Mediatek Dimensity 810 in the BLU F91 throttle under sustained gaming loads?
While the Dimensity 810 is a capable chip, it's known to exhibit some throttling under prolonged, demanding gaming sessions due to its thermal limitations. The Poco X4 Pro 5G’s Snapdragon 695, with Qualcomm’s thermal management optimizations, is likely to maintain higher sustained performance during gaming.
❓ How does the 67W charging on the Poco X4 Pro 5G compare to standard fast charging?
67W charging is significantly faster than typical fast charging solutions. The Poco X4 Pro 5G can reach 70% charge in just 22 minutes and 100% in 41 minutes, drastically reducing downtime compared to the BLU F91’s 18W charging, which will take considerably longer to fully replenish the battery.
❓ Is the lack of detailed camera specs on the BLU F91 a major concern?
Yes, the absence of information regarding sensor size, aperture, and image processing capabilities makes it difficult to assess the F91’s camera performance. Xiaomi generally invests more heavily in camera technology, suggesting the Poco X4 Pro 5G will likely offer a more versatile and higher-quality camera experience.