Findprix helps you compare the Infinix Smart 20 4G 4GB RAM, 128GB and Redmi 15A (4GB RAM + 128GB) in terms of price, specifications, user reviews, and more. Infinix Smart 20 4G 4GB RAM, 128GB is expected to launch in India on June 12, 2026, with a starting price of ₹13,999 Redmi 15A (4GB RAM + 128GB) is priced at ₹15,995. Here's a quick comparison.
| Product | Price | Processor | RAM | Storage | Display | Front Camera | Rear Camera | Battery | OS |
|---|---|---|---|---|---|---|---|---|---|
| Infinix Smart 20 4G | ₹13,999 | MediaTek Helio G81 Ultimate | 12 nm | 4GB | LPDDR4X | 128GB | eMMC 5.1 | 6.78 inches | HD+ | 8MP | 8MP | 5200 mAh | 15W | Android 16 | XOS 16 |
| Redmi 15A | ₹15,995 | Unisoc T8300 | 6 nm | 4GB | LPDDR4X | 128GB | UFS 2.2 | 6.9 inches | HD+ | 8MP | 32MP | 6300 mAh | 15W | Android 16 | HyperOS 3 |
₹13,999
Infinix Smart 20 4G
4GB RAM + 128GB
Upcoming 
₹15,995
Redmi 15A
4GB RAM + 128GB
Prices
Infinix Smart 20 4G
Prices not available
Redmi 15A
Amazon₹15,995
Flipkart₹15,999₹1,531 above the 1 month average of ₹14,464 — high price.
Ratings
Infinix Smart 20 4G
Ratings not available
Redmi 15A
3.5
(349)
General
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Device Type | Smartphone | Smartphone |
| Operating System | Android 16 | Android 16 |
| OS Updates | -- | 4 Years |
| Security Updates | -- | 6 Years |
| Custom UI | XOS 16 | HyperOS 3 |
Design
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Dimensions | 167.7 x 78.8 x 7.7 mm | 171.56 x 79.47 x 8.15 mm |
| Weight | 189 g | 210 g |
| Water Resistance | Yes, IP64 | Yes, IP52 |
| Dust Resistance | Yes | Yes |
| Build Material | Back: Plastic | Back: Polycarbonate |
| Colours | Sunlike Orange, Cloudline Blue, Shadow Black, Polaris Titanium | Awesome Blue, Amaze Purple, Ace Black |
Display
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Touch Screen | Yes | Yes |
| Touch Sampling Rate | -- | 240 Hz |
| Display Type | IPS LCD | IPS LCD |
| Brightness | HBM: 700 nits | Peak: 800 nits |
| Refresh Rate | 120 Hz | 120 Hz |
| Screen Size | 6.78 inches (17.22 cm), HD+ | 6.9 inches (17.53 cm), HD+ |
| Screen Resolution | 720 x 1600 pixels | 720 x 1600 pixels |
| Aspect Ratio | 20:9 | 20:9 |
| Screen-to-Body Ratio | ~82.9% | ~84.3% |
| Pixel Density | ~259 ppi | ~254 ppi |
Rear Camera
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Camera Setup | Single | Single |
| Primary | 8 MP (wide) f/2.0 aperture, 1/4.0″ sensor size, 1.12µm pixel size | 32 MP (wide) f/2.0 aperture, 1.12µm pixel size AF |
| OIS | -- | No |
| Autofocus | Yes | Yes |
| Flash | Yes, Dual LED | Yes, LED |
| Video Recording | 1440p @ 30 fps, 1080p @ 30 fps | 1080p @ 30 fps |
Front Camera
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Camera Setup | Single | Single |
| Primary | 8 MP (wide) f/2.0 aperture, 1/4.0″ sensor size, 1.12µm pixel size | 8 MP (wide) f/2.0 aperture, 1/4.0″ sensor size, 1.12µm pixel size |
| Video Recording | 1440p @ 30 fps, 1080p @ 30 fps | 1080p @ 30 fps |
Performance
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| RAM | 4 GB | 4 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Chipset | MediaTek Helio G81 Ultimate | Unisoc T8300 |
| Fabrication | 12 nm | 6 nm |
| GPU | Mali-G52 MC2 | Mali-G57 MC2 |
| CPU | Octa core 2x Cortex-A75 @ 2.0 GHz 6x Cortex-A55 @ 1.7 GHz | Octa core 2x Cortex A78 @ 2.2 GHz 6x Cortex A55 @ 2 GHz |
Storage
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Internal Storage | 128 GB | 128 GB |
| Storage Type | eMMC 5.1 | UFS 2.2 |
| Memory Card Slot | Yes, up to 2 TB | Yes, up to 2 TB |
Battery
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Battery | 5200 mAh | 6300 mAh |
| Battery Type | -- | Li-ion |
| Wired Charging Speed | 15W | 15W |
| Wired Reverse Charging | Yes, 5W | Yes, 7.5W |
Network
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| SIM | SIM 1: Nano SIM 2: Nano | SIM 1: Nano SIM 2: Nano |
| Network Support | 4G, 3G, 2G | 5G, 4G, 3G, 2G |
| 5G Bands | -- | n1, n3, n5, n8, n28, n40, n41, n78 |
| 4G Bands | B1, B2, B3, B4, B5, B7, B8, B20, B28, B38, B41, B40 | B1, B3, B5, B8, B28, B40, B41 |
| Navigation Support | GPS | GPS, Glonass, Galileo |
Connectivity
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Bluetooth | Yes, v5.2 | Yes, v5.4 |
| Wi-Fi | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
| NFC | Yes | -- |
| Infrared port | Yes | -- |
Features
| Feature | Infinix Smart 20 4G | Redmi 15A |
|---|---|---|
| Audio Jack | Yes, 3.5 mm | Yes, 3.5 mm |
| FM Radio | -- | Yes |
| Loud Speaker | Yes | Yes |
| Stereo Speakers | -- | Yes |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Sensors | Accelerometer, Compass, Proximity Sensor | Compass, Light Sensor, Proximity Sensor |
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