| Product |
Xiaomi Redmi 8A Dual
|
Samsung Z4
|
| Battery |
| Charging |
18W wired
2.5W reverse wired |
- |
| Type |
Li-Po 5000 mAh |
Li-Ion 2050 mAh, removable |
| Body |
| Build |
Glass front (Gorilla Glass 5), plastic back, plastic frame |
- |
| Dimensions |
156.5 x 75.4 x 9.4 mm (6.16 x 2.97 x 0.37 in) |
132.9 x 69.2 x 10.3 mm (5.23 x 2.72 x 0.41 in) |
| SIM |
Nano-SIM + Nano-SIM |
Single SIM (Micro-SIM) or Hybrid Dual SIM (Micro-SIM, dual stand-by) |
| Weight |
188 g (6.63 oz) |
143 g (5.04 oz) |
| |
Water-repellent coating |
- |
| Comms |
| Bluetooth |
4.2, A2DP, LE |
4.0, A2DP, LE |
| NFC |
No |
No |
| Positioning |
GPS, GLONASS, BDS |
GPS, GLONASS |
| Radio |
FM Radio, built-in antenna |
FM radio |
| USB |
USB Type-C 2.0, OTG |
microUSB 2.0, OTG |
| WLAN |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Display |
| Protection |
Corning Gorilla Glass 5 |
- |
| Resolution |
720 x 1520 pixels, 19:9 ratio (~270 ppi density) |
480 x 800 pixels, 5:3 ratio (~207 ppi density) |
| Size |
6.22 inches, 96.6 cm2 (~81.8% screen-to-body ratio) |
4.5 inches, 57.6 cm2 (~62.7% screen-to-body ratio) |
| Type |
IPS LCD, 400 nits (typ) |
IPS LCD |
| Features |
| Sensors |
Accelerometer, proximity, compass |
Accelerometer, proximity |
| Launch |
| Announced |
2020, February 11 |
2017, May. Released 2017, June |
| Status |
Available. Released 2020, February 18 |
Discontinued |
| Main Camera |
| Dual |
13 MP, f/2.2, (wide), 1/3.1", 1.12µm, PDAF
2 MP, f/2.4, (depth) |
- |
| Features |
LED flash, HDR, panorama |
Dual-LED flash, panorama, HDR |
| Single |
- |
5 MP, f/2.2 |
| Video |
1080p@30fps |
720p@30fps |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
microSDXC (uses shared SIM slot) |
| Internal |
32GB 2GB RAM, 32GB 3GB RAM, 64GB 3GB RAM |
8GB 1GB RAM |
| |
eMMC 5.1 |
- |
| Misc |
| Colors |
Sky White, Sea Blue, Midnight Grey |
Black, Gold |
| Models |
M2001C3K3I |
SM-Z400F, SM-Z400Y |
| SAR |
0.34 W/kg (head) 1.00 W/kg (body) |
- |
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 |
HSDPA 900 / 2100 |
| 4G bands |
1, 3, 5, 8, 40, 41 |
LTE |
| Speed |
HSPA, LTE |
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Technology |
GSM / HSPA / LTE |
GSM / HSPA / LTE |
| Platform |
| Chipset |
Qualcomm SDM439 Snapdragon 439 (12 nm) |
- |
| CPU |
Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) |
Quad-core 1.5 GHz |
| GPU |
Adreno 505 |
- |
| OS |
Android 9.0 (Pie), upgradable to Android 10, MIUI 12 |
Tizen 3.0 |
| Selfie camera |
| Features |
HDR |
LED flash |
| Single |
8 MP, f/2.0, 1/4.0", 1.12µm |
5 MP, f/2.2 |
| Video |
1080p@30fps |
|
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
