Infinix
Infinix Smart 20 128GB/4GB (UK Used)
₦192,000
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Infinix Smart 20 UK-used variant with 128GB storage and 4GB RAM. Confirm the exact model and unit condition before ordering.
How it scores
#74 of 101 in Mid-range (₦150k–₦300k)
Not enough verified detail yet.
Basic selfie camera.
Not enough verified detail yet.
IPS LCD at 120Hz — smooth enough for daily scrolling.
Not enough verified detail yet.
Not enough verified detail yet.
Scores are based on published specifications compared with other phones sold in Nigeria, not hands-on lab testing. Rank phones by what matters to you · See leaderboards
What's good
What's not
Full specifications
Memory & variant
| Storage | 128GB |
|---|---|
| RAM | 4GB |
| Condition | UK Used |
| Model verification | Confirm model number, physical RAM and storage in Settings before paying |
Display & design
| Screen size | 6.78 inches |
|---|---|
| Panel | IPS LCD |
| Resolution | 720 × 1576 |
| Refresh rate | 120Hz |
| Dimensions | 167.7 × 78.8 × 7.7mm |
| Weight | Not verified |
| Water resistance when new | IP64 |
Performance
| Chipset | MediaTek Helio G81 Ultimate |
|---|---|
| Launch software | Android 16 / XOS 16 |
Cameras
| Rear camera | 8MP autofocus |
|---|---|
| Front camera | 8MP |
Battery & connectivity
| Battery capacity when new | 5200mAh |
|---|---|
| Maximum wired charging | 15W |
| Network | 2G / 3G / 4G |
Model-specific notes
| Check before buying | X6840B. Official configurations: 64GB/4GB and 128GB/4GB. 256GB/4GB is seller-supplied and not manufacturer-confirmed. Up to 8GB includes virtual RAM; physical RAM is 4GB. Supports 15W; manufacturer states a 10W charger; 5W reverse charging. |
|---|
Used Buyer Checks
| Battery | Check battery wear, swelling, charging and runtime on the actual unit |
|---|---|
| Display | Test touch response, dead pixels, lines and burn-in |
| Network | Test calls and mobile data with your Nigerian SIM; confirm the unit is unlocked |
| Accounts | Have the seller remove Google and manufacturer accounts before resetting |
| Hardware | Test cameras, microphones, speakers, ports and fingerprint reader where fitted |
| History | Ask about repairs, water damage and replacement parts; confirm IMEI and return terms |
Display & design
| Screen size | 6.8 inches |
|---|---|
| Screen type | IPS LCD |
| Resolution | 720 × 1576 |
| Refresh rate | 120Hz |
| Dimensions | 167.7 × 78.8 × 7.7mm |
| Weight | Not verified |
| Colours | Not verified |
| Water resistance | IP64 |
Performance & storage
| Processor | MediaTek Helio G81 Ultimate |
|---|---|
| RAM | 4GB |
| Storage | 128GB |
| Operating system | Android 16 / XOS 16 |
| Software support | Not verified |
Cameras
| Rear camera | 8MP autofocus |
|---|---|
| Front camera | 8MP |
| Video | Not verified |
Battery & connectivity
| Battery | 5200mAh |
|---|---|
| Charging | 15W |
| Network | 2G / 3G / 4G |
| 5G | No |
| SIM | Not verified |
| NFC | Not verified |
| Fingerprint | Not verified |
Specifications from the manufacturer's official page.
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