| Siemens SX45 |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Operating system | Microsoft Windows CE 3.0 for PocketPC | Android 10.0; MIUI 11 |
| Processor | 64-bit NEC VR4122 150 MHz | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Internal memory | 32 MB | 64GB 4GB RAM, 128GB 6GB RAM |
| Chipset | Qualcomm SM7125 Snapdragon 720G (8 nm) | |
| External memory | No | microSDXC (dedicated slot) |
| GPU | Adreno 618 | |
| Display | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Type | TFT | IPS LCD |
| Resolution | 240 x 320 px | 1080 x 2400 px |
| Touchscreen | resistive touchscreen | capacitive touchscreen |
| Display area | cm2 | 107.4 cm2 |
| Size | 6.67" inc | |
| Display aspect ratio | 4:3 (height:width) | 20:9 (height:width) |
| Colors | 65K | 16M |
| Protection | Corning Gorilla Glass 5 | |
| Other | 57.6 mm x 76.8 mm -0.24 mm pixel pitch | 450 nits typ. brightness (advertised) |
| Screen-to-Body Ratio | 84.5% | |
| Pixel Density | 395 PPI | |
| Connectivity | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Wi-Fi | No | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Network | GSM | GSM / HSPA / LTE |
| SIM card | Mini-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | No | 5.0, A2DP, LE |
| Edge | No | Yes |
| GPRS | No | Yes |
| GPS | No | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500) | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A | |
| USB | 2.0, Type-C 1.0 reversible connector | |
| Camera | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Main camera | 48 MP, Quad | |
| Specs | 48 MP, f/1.8, (wide), 1/2.25", 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) | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS | |
| Selfie camera | 16 MP, Single | |
| Multimedia | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| 3.5 mm Jack | No | Yes |
| Radio | No | FM radio, recording |
| Design | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Dimensions | 134 x 87 x 26 mm | 165.8 x 76.7 x 8.8 mm |
| Weight | 330 g | 209 g |
| Colors | Aurora Blue, Glacier White, Interstellar Black | |
| Body build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame | |
| Battery | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Battery capacity | 1550 mAh, Removable Li-Ion | 5020 mAh, Non-removable Li-Po |
| Battery life | Stand by time- Up to 150 h Talking time- Up to 2 h | |
| Other | Siemens SX45 | Xiaomi Redmi Note 9 Pro |
| Release date | 2001 | 2020, March 12 |
| Sensors | Infrared port | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |
