Vivo iQOO U1 vs Xiaomi Redmi 15
Product
Price
159 USD
159 USD
Status
Available
Available
Brand
Vivo Mobiles
Xiaomi Mobiles
Model No
vivo iQOO U1
25057RN09E
Launch Date
2020, July 16
2025, August 01
Technology
GSM / CDMA / HSPA / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 & TD-SCDMA
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 3, 5, 8, 34, 38, 39, 40, 41
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 42, 48, 66, 71
Speed
HSPA 42.2/5.76 Mbps, LTE-A
HSPA, LTE, 5G
5G bands
1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 71 SA/NSA
Dimensions
162.1 x 76.6 x 8.5 mm (6.38 x 3.02 x 0.33 in)
169.5 x 80.5 x 8.4 mm (6.67 x 3.17 x 0.33 in)
Weight
190 g (6.70 oz)
217 g (7.65 oz)
SIM
Dual SIM (Nano-SIM, dual stand-by)
Nano-SIM + Nano-SIM
Colors
Star Blue, Secret Black, Sunny Frost White
Midnight Black, Titan Gray, Ripple Green
Build
Corning Gorilla Glass 3, Mohs level 6
IP64 dust tight and water resistant (water splashes)
Type
IPS LCD capacitive touchscreen, 16M colors
IPS LCD, 144Hz, 600 nits (typ), 700 nits (HBM), 850 nits (peak)
Size
6.53 inches, 104.7 cm2 (~84.3% screen-to-body ratio)
6.9 inches, 116.9 cm2 (~85.7% screen-to-body ratio)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
1080 x 2340 pixels, 19.5:9 ratio (~374 ppi density)
OS
Android 10, iQOO UI 1.0
Android 15, HyperOS 2.2
Chipset
Qualcomm SM7125 Snapdragon 720G (8 nm)
Qualcomm SM6375 Snapdragon 6s Gen 3 (6 nm)
CPU
Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
Octa-core (2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU
Adreno 618
Adreno 619
RAM
6GB/8GB
4GB/6GB/8GB
Storage
128GB/256GB
128GB/256GB
UFS 2.2
Card Slot
No
microSDXC (uses shared SIM slot)
Lens 1
48 MP, f/1.8, 25mm (wide), 1/2.0", 0.8µm, PDAF
50 MP, f/1.8, (wide), 1/2.88" 0.61μm, PDAF
Lens 2
2 MP, f/2.4, (macro)
Auxiliary lens
Lens 3
2 MP, f/2.4, (depth)
Features
Continuos Shooting, High Dynamic Range mode (HDR), Digital Zoom, Auto Flash, Face detection, Touch to focus
LED flash, HDR
Video
4K@30fps, 1080p@30fps; gyro-EIS
1080p@30fps
Lens 1
8 MP, f/2.1, (wide)
8 MP, f/2.0, (wide)
Features
AF, Face Focus, Face Detection etc
HDR
Video
1080p@30fps
1080p@30fps
Capacity
Li-Po 4500 mAh, non-removable
7000 mAh
Charging
Fast charging 18W
33W wired, PD 2.0, PPS, QC3
18W reverse wired
Sensors
Fingerprint (side-mounted), accelerometer, proximity, compass
Fingerprint (side-mounted), accelerometer, compass
Virtual proximity sensing
Circle to Search
Loudspeaker
Yes
Yes
3.5mm jack
Yes
No
24-bit/192kHz Hi-Res audio
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.1, A2DP, LE, aptX HD
5.1, A2DP, LE, aptX
GPS
Yes, with A-GPS, GLONASS, BDS, GALILEO
GPS, GLONASS, GALILEO, BDS
USB
microUSB 2.0, USB On-The-Go
USB Type-C 2.0, OTG
NFC
Yes (market/region dependent)