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Full specifications
Every available group and stored value, aligned by field.
LAUNCH DATE3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Announced | March 17, 2020 | 2026, February |
| Released | 2020-05-12 | 2026-03-04 |
| Status | Available | Available |
NETWORK6 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Bands | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G LTE | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 |
| 5G | No | No |
| Speed | LTE | LTE |
| Technology | 4G/LTE/GSM | 4G / 3G / 2G |
BODY5 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Build | Glass front (Gorilla Glass 5), plastic frame, plastic back | Glass front, plastic back, plastic frame |
| Dimensions | 162.3 x 77.2 x 8.9 mm (6.39 x 3.04 x 0.35 in) | 167.7 x 78.8 x 7.7 mm |
| IP Rating | No IP rating | IP64 |
| SIM | Nano-SIM + Nano-SIM | Dual Nano-SIM, dual standby; dedicated microSD slot |
| Weight | 199 g (7.02 oz) | 189 g |
DISPLAY8 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Brightness | 450 nits (typ) | 560 nits typical; 700 nits HBM |
| Color | — | 72% NTSC |
| Protection | Corning Gorilla Glass 5 | No branded cover glass specified by Infinix |
| Refresh Rate | 60Hz | Up to 120 Hz |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density) | 720 x 1576 |
| Screen-to-body | ~83.5% | ~84.8% |
| Size | 6.53 inches, 104.7 cm2 (~83.5% screen-to-body ratio) | 6.78 inches |
| Type | IPS LCD, 450 nits (typ) | IPS LCD |
PLATFORM4 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| CPU | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) | Octa-core (2x2.0GHz Cortex-A75 & 6x1.7GHz Cortex-A55 |
| Chipset | Mediatek MT6769Z Helio G85 (12 nm) | MediaTek Helio G81 Ultimate |
| GPU | Mali-G52 MC2 | Mali-G52 |
| OS | Android 10, upgradable to Android 12, MIUI 13 | Android 16, XOS 16 |
MEMORY5 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Card slot | microSDXC (dedicated slot) | Expandable storage, up to 2 TB |
| Internal | 64GB, 128GB | 64 GB / 128 GB |
| RAM | 3GB RAM, 4GB RAM, 6GB RAM | 4 GB |
| Storage Type | — | eMMC |
| Storage/RAM variants | 64GB, 128GB; 3GB RAM, 4GB RAM, 6GB RAM | 64 GB / 128 GB; 4 GB RAM |
MAIN CAMERA3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Features | LED flash, HDR, panorama | LED Flash |
| MAIN CAMERA | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro), AF Auxiliary lens | 8 MP, f/2.0, autofocus |
| Video | 1080p@30fps | 2K at 30 fps; 1080p at 30 fps |
SELFIE CAMERA3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Features | HDR, panorama | Screen flash |
| Selfie camera | 13 MP, f/2.3, 29mm (standard), 1/3.1", 1.12µm | 8 MP, f/2.0 |
| Video | 1080p@30fps | 2K at 30 fps |
SOUND2 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| 3.5mm jack | Yes | Yes |
| Loudspeaker | Yes, with dual speakers | Yes |
COMMUNICATION6 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | Yes |
| NFC | Yes (market/region dependent) M2003J15SG (Yes); M2003J15SS (No) | Yes |
| Positioning | GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS |
| Radio | FM radio, built-in antenna | Yes |
| USB | USB Type-C 2.0 | USB Type-C |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Yes |
FEATURES1 field
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | G-SENSOR, E-COMPASS, GYROSCOPE, LIGHT SENSOR, PROXIMITY SENSOR, FINGERPRINT, MOTOR, INFRARED BLASTER |
BATTERY3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Capacity | 5020 mAh | 5200 mAh |
| Charging Type | 18W wired 9W reverse wired | 15W supported; 10W charger supplied |
| Type | Li-Po 5020 mAh | Non-removable Li-Po Battery |
ADDITIONAL INFORMATION5 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Colors | Forest Green, Midnight Grey, Polar White | Shadow Black, Polaris Titanium, Sunlike Orange, Cloudline Blue |
| Compatibility | — | India specification set |
| Launch Price (USD) | $81.00 (reference only — see Price in Nigeria above for the actual retail price) | — |
| Models | M2003J15SC, M2003J15SG, M2003J15SS | X6840 |
| Price in Nigeria | ₦96,000 | ₦105,000 |
TESTS3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Battery Endurance | — | PCMark battery test: 11 h 24 min; charging from 20% to 100% took 2 h 12 min (91mobiles testing). |
| Graphics | — | 3DMark Wild Life Extreme: 169; BGMI averaged 28.4 FPS; Call of Duty Mobile delivered 40-45 FPS (91mobiles testing). |
| Performance | — | AnTuTu: 366,645; Geekbench multi-core: 1,352 (91mobiles testing). |
SECURITY3 fields
| Specification | Redmi Note 9 | Smart 20 |
|---|---|---|
| Anti-theft | — | Android Find Hub with remote locate, secure and erase functions; Android theft-protection features are configurable where supported. |
| Data Protection | — | Android 16 device encryption and screen-lock protection with fingerprint authentication. |
| Security | Biometric security: Fingerprint (rear-mounted). | Side-mounted fingerprint sensor; Android 16 with XOS 16; two years of security patches promised. |