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Better on paper
Read the verdict: Redmi Note 15 SE 5G vs Y21 5G
Display
SpecRedmi Note 15 SE 5GY21 5G
Size
6.77 inches
6.74 inches
Panel
Curved AMOLED display
LCD
Resolution
2392 x 1080 (better)
1600 x 720 (HD+)
Refresh rate
120Hz
120Hz
Peak brightness
3,200 nits
Not listed
Protection
Corning Gorilla Glass
Not listed
Performance
SpecRedmi Note 15 SE 5GY21 5G
Chipset
Snapdragon 6 Gen 3
Dimensity 6300
CPU
8-core
Octa-core, up to 2.4GHz
GPU
Adreno
Not listed
RAM
6GB, 8GB
4GB, 6GB
Storage
128GB, 256GB
64GB, 128GB
Software
HyperOS 3 · 2 OS updates
OriginOS 6, Android 16
Camera
SpecRedmi Note 15 SE 5GY21 5G
Rear cameras
50MP Light Fusion 400 + 2MP macro
50MP main (f/1.8) + 0.08MP auxiliary (f/3.0)
Front camera
16MP
5MP (f/2.2)
Video
4K at 30fps
Not listed
Battery
SpecRedmi Note 15 SE 5GY21 5G
Battery
5,800 mAh
6,500 mAh (better)
Wired charging
45W (better)
44W
Build and connectivity
SpecRedmi Note 15 SE 5GY21 5G
Network
5G
5G (SA/NSA), 4G VoLTE
SIM
Dual nano SIM
Hybrid dual nano SIM (up to 2TB microSD)
Wi-Fi and Bluetooth
Wi-Fi 6, Bluetooth 5.3
Dual-band Wi-Fi (2.4GHz, 5GHz), Bluetooth 5.4
NFC
No
No
Dust and water
IP64
IP65 (better)
Weight
178 g (better)
209 g
Thickness
7.4 mm (better)
8.39 mm
Colours
Carbon Black, Crimson Reserve, Frosted White
Champagne Gold, Midnight Blue
Availability
SpecRedmi Note 15 SE 5GY21 5G
Launch in India
31 Mar 2026
25 Mar 2026
Status
On sale
On sale
Versions and prices
6GB + 128GB₹19,9998GB + 256GB₹21,999
4GB + 64GB₹20,9994GB + 128GB₹23,9996GB + 128GB₹27,999