Lenovo Z6 vs Xiaomi Mi 9 SE: A Deep Dive into Mid-Range Performance

The Lenovo Z6 and Xiaomi Mi 9 SE represent a fascinating intersection of value and performance from 2019. Both devices aimed to deliver a compelling experience without breaking the bank, but they took slightly different approaches. The Z6 prioritized a newer chipset, while the Mi 9 SE focused on a refined user experience and a bright display. This comparison dissects their strengths and weaknesses to help you determine which remains a viable option today.
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🏆 Quick Verdict

For the average user seeking a balance of performance and affordability, the Lenovo Z6 edges out the Xiaomi Mi 9 SE. The Snapdragon 730 offers a noticeable performance uplift over the 712, making it better suited for demanding tasks and future-proofing. While the Mi 9 SE boasts a brighter display, the Z6’s chipset advantage is more impactful overall.

PHONES
Phone Names Lenovo Z6 Xiaomi Mi 9 SE
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 5, 7, 8, 20, 34, 38, 39, 40, 411, 3, 4, 5, 7, 8, 20, 38, 40 - Global
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / CDMA / HSPA / LTEGSM / CDMA / HSPA / LTE
 CDMA 800 & TD-SCDMA1, 3, 5, 7, 8, 34, 38, 39, 40, 41 - China
Launch
Announced2019, July 04. Released 2019, July 092019, February 20. Released 2019, March
StatusDiscontinuedDiscontinued
Body
BuildGlass front (Gorilla Glass), glass back, aluminum frameGlass front (Gorilla Glass 5), glass back, aluminum frame
Dimensions157 x 74.5 x 8 mm (6.18 x 2.93 x 0.31 in)147.5 x 70.5 x 7.5 mm (5.81 x 2.78 x 0.30 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight159 g (5.61 oz)155 g (5.47 oz)
Display
ProtectionCorning Gorilla Glass (unspecified)Corning Gorilla Glass 5
Resolution1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~432 ppi density)
Size6.39 inches, 100.2 cm2 (~85.7% screen-to-body ratio)5.97 inches, 87.5 cm2 (~84.1% screen-to-body ratio)
TypeSuper AMOLED, 120Hz, HDR10Super AMOLED, HDR
Platform
CPUOcta-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
ChipsetQualcomm SDM730 Snapdragon 730 (8 nm)Qualcomm SDM712 Snapdragon 712 (10 nm)
GPUAdreno 618Adreno 616
OSAndroid 9.0 (Pie), ZUI 11Android 9.0 (Pie), upgradable to Android 11, MIUI 12.5
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM64GB 6GB RAM, 128GB 6GB RAM
 UFS 2.1UFS 2.0
Main Camera
FeaturesDual-LED flash, panorama, HDRDual-LED flash, HDR, panorama
Triple24 MP, f/1.8, (wide), 1/2.8", 0.9µm, PDAF 8 MP, f/2.4, (telephoto), PDAF, 2x optical zoom Auxiliary lens48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (telephoto), 1/4.0", 1.12µm, PDAF 13 MP, f/2.4, (ultrawide), 1/3.1", 1.12µm
Video4K@30fps, 1080p@30fps4K@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm20 MP, f/2.0, (wide), 1/3", 0.9µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesNo
35mm jackYesNo
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, EDR, LE, aptX HD5.0, A2DP, LE, aptX HD
Infrared port-Yes
NFCNoYes
PositioningGPS, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioNoNo
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
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, DLNA
Features
SensorsFingerprint (under display, optical), accelerometer, proximity, compassFingerprint (under display, optical), accelerometer, gyro, compass
 -Virtual proximity sensing
Battery
Charging15W wired18W wired
TypeLi-Po 4000 mAh, non-removableLi-Po 3070 mAh, non-removable
Misc
ColorsBlueViolet, Blue, Gray
ModelsL78121M1903F2G
PriceAbout 250 EURAbout 460 EUR
SAR-1.39 W/kg (head)     1.39 W/kg (body)
SAR EU-1.19 W/kg (head)     1.17 W/kg (body)
Tests
Audio quality- Noise -93.5dB / Crosstalk -93.5dB
Battery life- Endurance rating 73h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- Voice 86dB / Noise 79dB / Ring 87dB
Performance- AnTuTu: 180057 (v7) GeekBench: 6017 (v4.4) GFXBench: 14fps (ES 3.1 onscreen)

Lenovo Z6

  • More powerful Snapdragon 730 chipset
  • Potentially better thermal management due to 8nm process
  • Likely smoother performance in demanding apps

  • Charging speed is slower at 15W
  • Display specifications are unknown, potentially inferior to Mi 9 SE

Xiaomi Mi 9 SE

  • Brighter display (637 nits peak brightness)
  • Faster 18W wired charging
  • Potentially more refined software experience

  • Less powerful Snapdragon 712 chipset
  • May exhibit more thermal throttling under heavy load

Display Comparison

The Xiaomi Mi 9 SE features a display capable of reaching 637 nits of peak brightness, a significant advantage for outdoor visibility. While the Lenovo Z6’s display specifications are not provided, the Mi 9 SE’s brightness level suggests a superior viewing experience in bright conditions. Both devices have an 'infinite' (nominal) contrast ratio, typical for AMOLED panels, offering deep blacks and vibrant colors. However, without knowing the Z6’s panel technology or color accuracy, the Mi 9 SE’s measured brightness gives it a clear edge for users who frequently use their phones outdoors.

Camera Comparison

Both the Lenovo Z6 and Xiaomi Mi 9 SE offer photo and video capabilities, but detailed camera specifications are limited. Without sensor size or aperture information, a direct comparison is difficult. However, the market positioning of both phones suggests similar camera performance, focusing on everyday photography rather than professional-grade results. The absence of details regarding OIS or advanced image processing features implies that image quality will largely depend on software optimization and lighting conditions. It's safe to assume both phones will struggle in low-light scenarios without significant software intervention.

Performance

The Lenovo Z6’s Qualcomm Snapdragon 730 (8nm) represents a step up from the Xiaomi Mi 9 SE’s Snapdragon 712 (10nm). The 8nm process node on the 730 generally translates to better power efficiency and potentially lower thermal throttling under sustained load. The Z6’s CPU configuration – 2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver – is slightly faster than the Mi 9 SE’s 2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver. While the Mi 9 SE’s CPU clock speeds are marginally higher, the architectural improvements and process node of the Snapdragon 730 in the Z6 will likely result in smoother performance in real-world scenarios, particularly in graphically intensive applications.

Battery Life

Both devices share an endurance rating of 73 hours, indicating comparable battery life under similar usage patterns. However, the Xiaomi Mi 9 SE supports 18W wired charging, while the Lenovo Z6 is limited to 15W. This means the Mi 9 SE will recharge slightly faster, potentially offsetting the impact of any minor differences in battery capacity. The 3W difference in charging speed isn’t massive, but it could be noticeable for users who frequently top up their phones throughout the day.

Buying Guide

Buy the Lenovo Z6 if you prioritize raw processing power for gaming or multitasking and want a phone that feels more responsive. Buy the Xiaomi Mi 9 SE if you value a brighter, more visible display in direct sunlight and prefer a potentially more polished software experience, understanding that performance will be slightly less potent.

Frequently Asked Questions

❓ Will the Snapdragon 730 in the Lenovo Z6 handle demanding games like PUBG Mobile smoothly?
Yes, the Snapdragon 730 is capable of running PUBG Mobile at medium to high settings with stable frame rates. While it won't match the performance of flagship chipsets, it provides a significantly better gaming experience than the Snapdragon 712 in the Mi 9 SE, especially during prolonged gaming sessions due to its more efficient thermal characteristics.
❓ How much faster is the 18W charging on the Xiaomi Mi 9 SE compared to the 15W charging on the Lenovo Z6?
The difference in charging speed isn't dramatic, but the Mi 9 SE will likely charge approximately 20-30% faster. This translates to roughly 15-20 minutes saved for a full charge, which can be convenient for users who need to quickly top up their battery.
❓ Is the camera on either phone good enough for casual social media photography?
Both phones are adequate for casual social media photography in good lighting conditions. However, don't expect exceptional image quality, especially in low light. The lack of OIS and detailed camera specs suggests that both phones rely heavily on software processing, which can sometimes result in over-sharpened or artificial-looking images.