Infinix Verified
SpecificationsInfinix Smart 20
Announced 4 March 2026 · Checked 28 October 2026
The Infinix Smart 20 was announced in March 2026. It has a 6.78-inch 120 Hz IPS LCD display, a 5200 mAh battery with 10 W wired charging and an 8 MP main camera. It runs Android 16 at launch. Model codes: X6840, X6840B.
- Display
- 6.78″ LCD120 Hz · 700 nits peak
- Chipset
- Helio G85
- Battery
- 5200 mAh10 W wired
- Main camera
- 8 MP
- Memory
- 4 GB · 64 GB
- Weight
- 185 g167.7 × 78.8 × 7.7 mm
Model code
Memory
What stands outKey facts from the table below, each with its source
DisplayOfficial
6.78″
IPS LCD · 120 Hz · 720 × 1576
ChipsetVerified
Helio G85
Android 16 at launch
BatteryOfficial
5200 mAh
10 W wired
CameraOfficial
8 MP main
8 MP front
Full specifications
SourcePublic infoOfficialVerified
| Announced | 4 March 2026 | Public info |
|---|
| Size | 6.78 inches | Official |
|---|---|---|
| Screen | IPS LCD, 120 Hz, 700 nits (HBM) | Public info |
| Resolution | 720 × 1576 pixels, HD+ (~256 ppi) | Official |
| Chipset | Helio G85 | Verified |
|---|---|---|
| OS at launch | Android 16, XOS16 | Official |
| RAM | 4 GB | Official |
|---|---|---|
| Storage | 64 GB | Official |
| Card slot | microSDXC | Official |
| Storage type | eMMC | Verified |
| Cameras | 8 MP, f/2.0, 1/4'' sensor, 1.12um, AF | Official |
|---|
| Camera | 8 MP, f/2.0, 1/4'' sensor, 1.12um, FF | Official |
|---|
| Capacity | 5200 mAh | Official |
|---|---|---|
| Wired charging | 10 W | Official |
| Wireless charging | Not published |
| Network | 4G / 3G / 2G | Official |
|---|---|---|
| Wireless | Wi-Fi 802.11 a/b/g/n/ac, dual-band · Bluetooth: Yes · NFC: Yes · Infrared: Yes | Public info |
| NFC | Yes | Public info |
| Ports | USB Type-C 2.0, OTG | Public info |
| Height | 167.7 mm | Official |
|---|---|---|
| Width | 78.8 mm | Official |
| Thickness | 7.7 mm | Official |
| Weight | 185 g | Public info |
| Protection | IP64 | Official |
| Colours | Shadow Black / Polaris Titanium / Sunlike Orange / Cloudline Blue | Official |
| Sensors | G-SENSOR, E-COMPASS, GYROSCOPE, LIGHT SENSOR, PROXIMITY SENSOR, FINGERPRINT, MOTOR, INFRARED BLASTER | Official |
|---|
| Speakers | Yes | Public info |
|---|
| Codes | X6840, X6840B | Verified |
|---|
Variants and model codes
Model codes
| Model code | Covers | Sold as | Firmware |
|---|---|---|---|
| X6840 | 4 GB + 64 GB, 4 GB + 128 GB | SMART 20 | Firmware list ↗ (opens in a new tab) |
| X6840B | 4 GB + 64 GB, 4 GB + 128 GB | SMART 20 | Firmware list ↗ (opens in a new tab) |
Memory versions
| Version | RAM | Storage | Source |
|---|---|---|---|
| 4 GB + 64 GB | 4 GB | 64 GB | Official |
| 4 GB + 128 GB | 4 GB | 128 GB | Official |
Builds read from firmware Verified
| Model code | Build | Android | Security patch | Chip | Storage |
|---|---|---|---|---|---|
| X6840B | X6840B, patch 2025-11-05 | 16 | 2025-11-05 | Helio P65, G70, G80, G85 or G88 family | eMMC |
Software support
| Software at launch | Android 16 |
|---|---|
| Update promise | Not published by the maker |
| Newest firmware read | Android 16, November 2025 patch · X6840B Verified |
Quick answers
Does the Infinix Smart 20 support eSIM?
No.
Is the Infinix Smart 20 waterproof?
It is rated IP64 for dust and water resistance.
Does the Infinix Smart 20 support 5G?
No, it is a 4G phone.
Compare the Smart 20
More from Infinix
Sources and changes
- Verified in firmware: Firmware builds X6840B, patch 2025-11-05, read by LexzyTech · checked 26 August 2026
- Google: Google Play certified-device list: SMART 20 (opens in a new tab) · checked 28 October 2026
- Verified against: Infinix official specification page (opens in a new tab) · checked 28 October 2026
- Cross-checked with: GSMArena (independent cross-check) (opens in a new tab) · checked 28 October 2026
- 2026-10-28 · Page created from the sources listed above.