| AT&T Mustang |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Operating system | Windows Mobile 6 Standard | Android 10.0; MIUI 11 |
| Processor | Marvell Bulverde 416 MHz | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Chipset | Qualcomm SM7125 Snapdragon 720G (8 nm) | |
| GPU | Adreno 618 | |
| Internal memory | 64MB RAM, 128MB ROM | 64GB 4GB RAM, 128GB 6GB RAM |
| External memory | microSD (dedicated slot) | microSDXC (dedicated slot) |
| Display | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Type | TFT, 256K colors | IPS LCD |
| Size | 2.2 inches, 15.0 cm2 | 6.67" inc |
| Resolution | 240 x 320 pixels, 4:3 ratio | 1080 x 2400 px |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 84.5% | |
| Display area | 107.4 cm2 | |
| Display aspect ratio | 20:9 (height:width) | |
| Pixel Density | 395 PPI | |
| Colors | 16M | |
| Other | 450 nits typ. brightness (advertised) | |
| Main Camera | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Camera | 1.3 MP | |
| Video | Yes | |
| Selfie camera | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Camera | No | |
| Connectivity | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Technology | GSM / HSPA | |
| 3G Network | HSDPA 850 / 1900 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500) | |
| WLAN | No | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 1.2, A2DP | 5.0, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | No | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC |
| Speed | HSPA 1.8 Mbps | HSPA 42.2/5.76 Mbps, LTE-A |
| USB | 1.1 | 2.0, Type-C 1.0 reversible connector |
| Camera | AT&T Mustang | 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 | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Loudspeaker | Yes | |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio, recording |
| Design | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Body | Dual slide design | |
| SIM | Mini-SIM | |
| Keyboard | QWERTY | |
| Colors | Black | Aurora Blue, Glacier White, Interstellar Black |
| Body build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame | |
| Dimensions | 102 x 50 x 19.9 mm (4.02 x 1.97 x 0.78 in) | 165.8 x 76.7 x 8.8 mm |
| Weight | 110 g (3.88 oz) | 209 g |
| Battery | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Capacity | Removable Li-Po 1320 mAh battery | |
| Stand-by | Up to 240 h | |
| Talk time | Up to 3 h | |
| Battery capacity | 5020 mAh, Non-removable Li-Po | |
| Other | AT&T Mustang | Xiaomi Redmi Note 9 Pro |
| Release date | 2020, March 12 | |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |
