Product
Realme U1
Realme U1
Vivo Y35 (2015)
Vivo Y35 (2015)
Battery
Charging 10W wired -
Music play - Up to 32 h
Stand-by - Up to 410 h (2G) / Up to 410 h (3G)
Talk time - Up to 13 h (2G) / Up to 13 h (3G)
Type Li-Ion 3500 mAh, non-removable 2300 mAh, non-removable
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame -
Dimensions 157 x 74 x 8 mm (6.18 x 2.91 x 0.31 in) 143.3 x 71 x 6.8 mm (5.64 x 2.80 x 0.27 in)
SIM Nano-SIM + Nano-SIM Dual SIM (Micro-SIM, dual stand-by)
Weight 168 g (5.93 oz) 153 g (5.40 oz)
Comms
Bluetooth 4.2, A2DP, LE 4.0, A2DP, EDR
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS GPS
Radio FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot
Display
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density) 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Size 6.3 inches, 97.4 cm2 (~83.9% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~67.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Accelerometer, proximity, compass
Launch
Announced 2018, November. Released 2018, December 2015, July. Released 2015, July
Status Discontinued Discontinued
Main Camera
Dual 13 MP, f/2.2, AF 2 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single - 13 MP, AF
Video 1080p@30fps, 720p@90fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM 16GB 2GB RAM
  eMMC 5.1 eMMC 4.5
Misc
Colors Ambitious Black, Brave Blue, Fiery Gold White/Gold
Models RMX1831, RMX1833 Y35
SAR - 0.53 W/kg (head)     1.34 W/kg (body)    
SAR EU - 0.28 W/kg (head)     0.70 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 LTE 850 / 900 / 1800 / 2100
Speed HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality Noise -92.8dB / Crosstalk -93.3dB -
Battery (old) Endurance rating 93h -
Camera Photo / Video -
Display Contrast ratio: 1830:1 (nominal), 2.815 (sunlight) -
Loudspeaker Voice 68dB / Noise 73dB / Ring 72dB -
Performance AnTuTu: 144436 (v7) GeekBench: 6004 (v4.4) GFXBench: 7.1fps (ES 3.1 onscreen) -
Platform
Chipset Mediatek MT6771 Helio P70 (12 nm) Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Quad-core 1.2 GHz Cortex-A53
GPU Mali-G72 MP3 Adreno 306
OS Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ColorOS 6 Android 5.0 (Lollipop), Funtouch 2.1
Selfie camera
Features HDR -
Single 25 MP, f/2.0, 1/2.8", 0.9µm 5 MP
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes