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Zero 40 4G vs Redmi Note 15 5G

Infinix Zero 40 4G vs Xiaomi Redmi Note 15 5G

What Zero 40 4G does better (3) and where Redmi Note 15 5G wins (16) — every spec side by side.

Infinix · 2024Zero 40 4G

7.4Score

3 advantages≈ $270

Xiaomi · 2025Redmi Note 15 5G

8.8Score

16 advantages≈ $270

Higher score

8.4Display9.0

4.0Performance6.5

8.9Camera8.2

6.8Battery8.1

4.1Features8.3

Dimensions

Size comparison

Zero 40 4GRedmi Note 15 5G

	Zero 40 4G	Redmi Note 15 5G	Difference
Height	164.3 mm	164 mm	+0.3 mm
Width	74.6 mm	75.4 mm	−0.8 mm
Thickness	7.7 mm	7.4 mm	+0.3 mm
Weight	180 g	178 g	+2 g

Drawn to the same scale from the official dimensions (front and side).

Why is Zero 40 4G better than Redmi Note 15 5G?

Selfie camera50 MP vs 20 MP2.5×
Storage (base)256 GB vs 128 GB2×
Charged in 30 min60% vs 55%+9%

Why is Redmi Note 15 5G better than Zero 40 4G?

AnTuTu score504,555 vs 830,765+65%
Peak brightness1,300 nits vs 3,200 nits2.5×
Geekbench 6 (multi-core)1,951 vs 2,972+52%
RAM8 GB vs 12 GB+50%
5GNo · Zero 40 4G: Yes
Stereo speakersNo · Zero 40 4G: Yes
Battery capacity5,000 mAh vs 5,520 mAh+10%
Water resistance (IPx)IPx4 vs IPx5+25%
Memory card slotNo · Zero 40 4G: Yes
eSIMNo · Zero 40 4G: Yes
CPU frequency2.2 GHz vs 2.4 GHz+9%
Pixel density393 ppi vs 405 ppi+3%

Specifications

Side by side

Only differences	Infinix Zero 40 4G≈ $2707.4	Xiaomi Redmi Note 15 5G≈ $2708.8
Design
Weight	180 g	178 g
Thickness	7.7 mm	7.4 mm
Height	164.3 mm	164 mm
Width	74.6 mm	75.4 mm
Frame	Plastic	Plastic
Back	Plastic	Plastic
Ingress protection	IP54	IP65
Water resistance (IPx)	IPx4	IPx5
Glass protection	Corning Gorilla Glass 5	Gorilla Glass 5
Colours	Misty Aqua, Rock Black, Blossom Glow	Black, Blue, Purple
Display
Screen size	6.8″	6.8″
Panel	AMOLED	AMOLED
OLED panel	Yes	Yes
Resolution (width)	1,080 px	1,080 px
Resolution (height)	2,436 px	2,392 px
Pixel density	393 ppi	405 ppi
Refresh rate	120 Hz	120 Hz
Peak brightness	1,300 nits	3,200 nits
Measured brightness	—	3,286 nits
Screen-to-body ratio	89.7%	91.1%
HDR	—	Yes
Performance
Chipset	Mediatek Helio G100	Qualcomm Snapdragon 6 Gen 3
Chip maker	MediaTek	Qualcomm
Process	6 nm	4 nm
CPU cores	8	8
CPU frequency	2.2 GHz	2.4 GHz
GPU	Mali-G57 MC2	Adreno 710
AnTuTu score	504,555	830,765
Geekbench 6 (multi-core)	1,951	2,972
Memory
RAM	8 GB	12 GB
Storage (max)	512 GB	512 GB
Storage (base)	256 GB	128 GB
Storage type	UFS 2.2	UFS 2.2
Memory card slot	No	Yes
Camera
Main camera	108 MP	108 MP
Main camera aperture	f/1.8	f/1.7
Main sensor size	1/1.67"	1/1.67"
Rear cameras	2	2
Optical stabilisation	Yes	Yes
Ultra-wide camera	Yes	Yes
Telephoto camera	No	No
Max video	1080p	1080p
4K video frame rate	—	30 fps
Selfie camera	50 MP	20 MP
4K selfie video	No	No
Battery
Battery capacity	5,000 mAh	5,520 mAh
Battery type	Li-Po	Li-Po
Wired charging	45 W	45 W
Charged in 30 min	60%	55%
Wireless charging	No	No
Connectivity
5G	No	Yes
eSIM	No	Yes
Dual SIM	Yes	Yes
Wi-Fi standard	Wi-Fi 5	Wi-Fi 5
Bluetooth	5.2	5.4
NFC	Yes	Yes
USB	USB Type-C 2.0	USB Type-C
USB version	2	2
Infrared port	Yes	Yes
Satellite navigation	GLONASS, GALILEO, BDS	GPS, GLONASS, GALILEO, BDS
Features
Stereo speakers	No	Yes
3.5 mm headphone jack	No	No
Fingerprint sensor	Under display	Under display
Sensors	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass	proximity, accelerometer, gyro, compass, fingerprint
Software
OS at launch	Android 14	Android 15
Platform	Android	Android
Interface	XOS 14.5	HyperOS 2
Major OS updates promised	2	—
EU label
Energy class	—	B