Phone Comparison - Xiaomi Mi 4i vs Xiaomi Redmi Note 9S vs Xiaomi Mix Fold 4

general General Info

Manufacturer Xiaomi Xiaomi Xiaomi
Announced April 2015 March 2020 July 2024
Status Available - April 2015 Coming Soon - April 2020 Available - July 2024
Price Rs. 8,999 ($132.34) [Similarly Priced] - -
Colors Black, White, Blue, Yellow, Pink Aurora Blue, Glacier White, Interstellar Gray Black, White, Blue
Form Factor Candybar Candybar Candybar
Dimension 138.1 x 69.6 x 7.8 mm
(5.44 x 2.74 x 0.31 in)
165.8 x 76.7 x 8.8 mm
(6.53 x 3.02 x 0.35 in)
Unfolded: 159.4 x 143.3 x 4.6 mm
Folded: 159.4 x 73.1 x 9.5 mm
(Unfolded: 6.28 x 5.64 x 0.18 in
Folded: 6.28 x 2.88 x 0.37 in)
Weight 130 g (4.59 oz) 209 g (7.37 oz) 226 g or 228 g (7.97 oz or 8.04 oz)
SIM Type - Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
CDMA2000 1xEV-DO
4G Network LTE LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300) 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66
5G Network - - 1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79 SA/NSA
Messaging SMS, MMS, EMail, IM
Build Features - - Fingerprint Sensor (side-mounted)
Splash-proof
- Fingerprint Sensor (side-mounted)
IPX8 water resistant (up to 1.5m for 30 min)

hardware Hardware and OS

OS Android OS, v5.0 (Lollipop) Android 10.0 Android 14
User Interface - MIUI 11 HyperOS
Processor Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver), Qualcomm SM7125 Snapdragon 720G (8 nm) Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520), Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
GPU Adreno 405 Adreno 618 Adreno 750
RAM 2 GB 6 GB 16 GB
Internal Memory 16/32 GB 128 GB 1 TB
External Memory No microSDXC (dedicated slot) No

display Display

Type IPS LCD capacitive touchscreen FHD+ IPS LCD Capacitive Touchscreen
Corning Gorilla Glass 5
450 nits typ. brightness (advertised)
QHD+ Foldable LTPO AMOLED Screen
120Hz Refresh Rate
HDR10+, Dolby Vision
1700 Nits (HBM), 3000 Nits (peak)
Colors 16M colors 16M colors 1B colors
Size 5.0 inches 6.67 inches 7.98 inches
Resolution 1080 x 1920 pixels (441 ppi) 1080 x 2400 pixels (395 ppi) 2224 x 2488 pixels (418 ppi)
Screen-to-Body Ratio 71.57% 84.28% 89.45%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes no
Radio FM radio FM radio, recording No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 48 MP + 8 MP + 5 MP + 2 MP 50 MP + 50 MP + 10 MP + 12 MP
Flash LED flash LED flash LED flash
Features Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.4, (macro), 1.12µm
2 MP, f/2.4, (depth)
HDR, Panorama
50 MP, f/1.7, 23mm (wide), 1/1.49", 1.0µm, Laser AF, PDAF, OIS
50 MP, f/2.0, 47mm (telephoto), PDAF (9cm - ∞), OIS, 2x optical zoom
10 MP, f/2.9, 115mm (periscope telephoto), PDAF (30cm - ∞), OIS, 5x optical zoom
12 MP, f/2.2, 15mm, 120˚ (ultrawide)
HDR, panorama, Leica lenses
Video 1080p@30fps 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS 8K@24fps, 4K@24/30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, Dolby Vision HDR
Front Camera 5 MP [Similar] 16 MP Punch-Hole, f/2.5, 26mm (wide), 1/3.1", 1.0µm
HDR
1080p@30fps [Similar]
16 MP, (wide)
Cover camera:
16 MP, (wide)
Dolby Vision HDR
1080p@30/60fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE HSPA 42.2/5.76 Mbps, LTE-A HSPA, LTE (CA), 5G
Bluetooth v4.0, A2DP 5.0, A2DP, LE 5.4, A2DP, LE, aptX HD, aptX Adaptive, LHDC
Wi-Fi Wi-Fi 802.11 a/b/g/n, dual-band, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band (tri-band after future SW update), Wi-Fi Direct
USB microUSB v2.0 2.0, Type-C 1.0 reversible connector USB Type-C 3.2, OTG
GPS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, GALILEO, BDS GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
Browser HTML5 Yes Yes

memory User Memory

Internal 16/32 GB, 2 GB RAM 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) 1 TB, 16 GB RAM or 512 GB, 16 GB RAM or 256 GB, 12 GB RAM UFS 4.0
Expandable Storage No microSDXC (dedicated slot) No
USB OTG - Supported Supported

Apps Sensors

Fingerprint fingerprint not supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Barometer Sensor barometer sensor barometer sensor not present barometer sensor present
NFC NFC not supported NFC not supported NFC supported

battery Battery

Type Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 18W
Non-removable Li-Po Battery
Fast Battery Charging 67W wired, PD3.0, QC4, 31% in 10 min
50W wireless, 24% in 10 min
Capacity 3120 mAh 5020 mAh 5100 mAh
Stand by - - -
Talk Time - - -