Screen size
equal specs17 Ultra6.9"
Redmi 15a6.9"
Quick verdict
17 Ultra leads the measured specs 16-4.
Measured wins
17 Ultra
16
spec wins
Overall winner
Ties
3
equal specs
Redmi 15a
4
spec wins
Screen size
equal specsTechnology
17 Ultra
GSM / HSPA / LTE / 5G
Redmi 15a
GSM / HSPA / LTE / 5G
2G bands
17 Ultra
GSM 850 / 900 / 1800 / 1900
Redmi 15a
GSM 850 / 900 / 1800 / 1900
3G bands
17 Ultra
HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
Redmi 15a
HSDPA 850 / 900 / 2100
4G bands
17 Ultra
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
Redmi 15a
1, 3, 5, 8, 28, 40, 41
5G bands
17 Ultra
1, 2, 3, 5, 7, 8, 12, 13, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 70, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA
Redmi 15a
1, 3, 5, 8, 28, 40, 41, 78 SA/NSA
Speed
17 Ultra
HSPA, LTE, 5G
Redmi 15a
HSPA, LTE, 5G
Announced
17 Ultra
2025, December 25
Redmi 15a
2026, March 27
Status
17 Ultra
Available. Released 2025, December 27
Redmi 15a
Released Apr 3, 2026
Dimensions
17 Ultra
162.9 x 77.6 x 8.5 mm (6.41 x 3.06 x 0.33 in)
Redmi 15a
171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Weight
17 Ultra
230 g (8.11 oz)
Redmi 15a
210 g (7.41 oz)
Build
17 Ultra
Glass front, fiber-reinforced plastic back / silicone polymer back (eco leather), aluminum frame
Redmi 15a
-
SIM
17 Ultra
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
Redmi 15a
Nano-SIM + Nano-SIM
Other
17 Ultra
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 6m for 30 min) Aerospace-grade glass fiber
Redmi 15a
Dust and splash resistant
Type
17 Ultra
LTPO AMOLED, 68B colors, 120Hz, 2160Hz PWM, Dolby Vision, HDR Vivid, HDR10+, 3500 nits (peak)
Redmi 15a
IPS LCD, 120Hz, 800 nits (peak)
Size
17 Ultra
6.9 inches, 116.6 cm2 (~92.3% screen-to-body ratio)
Redmi 15a
6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Resolution
17 Ultra
1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)
Redmi 15a
720 x 1600 pixels, 20:9 ratio (~254 ppi density)
OS
17 Ultra
Android 16, HyperOS 3
Redmi 15a
Android 16, HyperOS 3, up to 4 major Android upgrades
Chipset
17 Ultra
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
Redmi 15a
Unisoc T8300 (6 nm)
CPU
17 Ultra
Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
Redmi 15a
Octa-core (2x2.2 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU
17 Ultra
Adreno 840
Redmi 15a
Mali-G57 MC2
Card slot
17 Ultra
No
Redmi 15a
microSDXC (dedicated slot)
Internal
17 Ultra
512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Redmi 15a
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
Other
17 Ultra
UFS 4.1
Redmi 15a
UFS 2.2
Triple
17 Ultra
50 MP, f/1.7, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS 200 MP, f/2.4-3.0, 75-100mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF (30cm - ∞), OIS, 3.2-4.3x continuous optical zoom, zoom ring 50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, dual pixel PDAF TOF 3D, (depth)
Redmi 15a
-
Features
17 Ultra
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Redmi 15a
LED flash, HDR
Video
17 Ultra
8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)
Redmi 15a
1080p@30fps
Dual
17 Ultra
-
Redmi 15a
32 MP, f/2.0, (wide), 1.12µm, AF Auxiliary lens
Single
17 Ultra
50 MP, (wide), 1/2.88", 0.61µm
Redmi 15a
8 MP, f/2.0, (wide), 1/4.0", 1.12µm
Features
17 Ultra
HDR, panorama
Redmi 15a
HDR
Video
17 Ultra
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Redmi 15a
1080p@30fps
Loudspeaker
17 Ultra
Yes, with stereo speakers
Redmi 15a
Yes
3.5mm jack
17 Ultra
No
Redmi 15a
Yes
Other
17 Ultra
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Redmi 15a
-
WLAN
17 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Redmi 15a
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
17 Ultra
5.4, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5, MIHC
Redmi 15a
5.4, A2DP, LE
Positioning
17 Ultra
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
Redmi 15a
GPS, GLONASS, GALILEO, BDS
NFC
17 Ultra
Yes
Redmi 15a
No
Infrared port
17 Ultra
Yes
Redmi 15a
-
Radio
17 Ultra
No
Redmi 15a
FM radio, recording
USB
17 Ultra
USB Type-C 3.2 Gen 2, DisplayPort, OTG
Redmi 15a
USB Type-C 2.0, OTG
Sensors
17 Ultra
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
Redmi 15a
Fingerprint (side-mounted), accelerometer, compass
Other
17 Ultra
Two-way satellite communication
Redmi 15a
Virtual proximity sensing
Type
17 Ultra
Si/C Li-Ion 6800 mAh
Redmi 15a
6300 mAh
Charging
17 Ultra
90W wired, 90W PPS, PD3.0, QC3+ 50W wireless 22.5W reverse wired 10W reverse wireless
Redmi 15a
15W wired 7.5W reverse wired
Colors
17 Ultra
Black, White, Starry Green, Purple
Redmi 15a
Black, Blue, Purple
Models
17 Ultra
25128PNA1C
Redmi 15a
-
Price
17 Ultra
About 850 EUR
Redmi 15a
About 120 EUR