| Product |
Xiaomi Redmi Note 8 2021
|
Apple iPhone 4s
|
| Battery |
| Charging |
18W wired |
- |
| Stand-by |
- |
Up to 200 h (3G) |
| Talk time |
- |
Up to 8 h (3G) |
| Type |
Li-Po 4000 mAh |
Li-Po 1432 mAh, non-removable (5.3 Wh) |
| Body |
| Build |
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame |
Glass front (Corning-made glass), glass back, stainless steel frame |
| Dimensions |
158.3 x 75.3 x 8.4 mm (6.23 x 2.96 x 0.33 in) |
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in) |
| SIM |
Nano-SIM + Nano-SIM |
Micro-SIM |
| Weight |
190 g (6.70 oz) |
140 g (4.94 oz) |
|
- |
Scratch-resistant glass back panel |
| Comms |
| Bluetooth |
5.2, A2DP, LE |
4.0, A2DP, LE |
| Infrared port |
Yes |
- |
| NFC |
No |
- |
| Positioning |
GPS, GLONASS, GALILEO, BDS |
GPS, A-GPS, GLONASS |
| Radio |
FM radio |
No |
| USB |
USB Type-C 2.0, OTG |
2.0 |
| WLAN |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
Wi-Fi 802.11 b/g/n, hotspot |
| Display |
| Protection |
Corning Gorilla Glass 5 |
Corning Gorilla Glass, oleophobic coating |
| Resolution |
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density) |
640 x 960 pixels, 3:2 ratio (~330 ppi density) |
| Size |
6.3 inches, 97.4 cm2 (~81.7% screen-to-body ratio) |
3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio) |
| Type |
IPS LCD, 500 nits (typ) |
IPS LCD |
| Features |
| Sensors |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
Accelerometer, gyro, proximity, compass |
| Launch |
| Announced |
2021, May 25 |
2011, October 04. Released 2011, October 14 |
| Status |
Available. Released 2021, May 27 |
Discontinued |
| Main Camera |
| Features |
LED flash, HDR, panorama |
LED flash, panorama, HDR |
| Quad |
|
- |
| Single |
- |
|
| Video |
1080p@30/120fps; gyro-EIS |
1080p@30fps |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
No |
| Internal |
64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM |
8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM |
|
eMMC 5.1 |
- |
| Misc |
| Colors |
Neptune Blue, Moonlight White, Space Black |
Black, White |
| Models |
M1908C3JGG |
A1431, A1387, iPhone4,1 |
| SAR |
|
|
| SAR EU |
|
|
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands |
1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40 |
- |
| Speed |
HSPA, LTE |
HSPA 14.4/5.76 Mbps |
| Technology |
GSM / HSPA / LTE |
GSM / CDMA / HSPA / EVDO |
|
- |
CDMA2000 1xEV-DO |
| Our Tests |
| Battery (old) |
Endurance rating 102h |
- |
| Camera |
Photo / Video |
- |
| Display |
1487:1 contrast ratio, 620 nits max brightness (measured) |
- |
| Loudspeaker |
-28.6 LUFS (Average) |
- |
| Performance |
AnTuTu: 180195 (v8), 165779 (v9)
GeekBench: 5259 (v4.4), 1314 (v5.1)
GFXBench: 8.7fps (ES 3.1 onscreen) |
- |
| Platform |
| Chipset |
Mediatek MT6769Z Helio G85 (12 nm) |
Apple A5 (45 nm) |
| CPU |
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) |
Dual-core 1.0 GHz Cortex-A9 |
| GPU |
Mali-G52 MC2 |
PowerVR SGX543MP2 |
| OS |
Android 11, MIUI 12.5 |
iOS 5, upgradable to iOS 9.3.6 |
| Selfie camera |
| Features |
HDR, panorama |
- |
| Single |
|
VGA, videocalling over Wi-Fi and 3G |
| Video |
1080p@30fps |
480p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
| Tests |
| Audio quality |
- |
Noise -91.2dB / Crosstalk -93.0dB |
| Battery (old) |
- |
Endurance rating 45h |
| Camera |
- |
Photo / Video |
| Display |
- |
Contrast ratio: 1261:1 (nominal) / 2.269:1 (sunlight) |
| Loudspeaker |
- |
Voice 65dB / Noise 64dB / Ring 74dB |
