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Karbonn KT21 Express Specifications
Karbonn
Released 2012, Jun 15
- Feature phone
- microSDHC slot
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Genze vs community
Genze and community ratings are both shown on a /10 scale. Genze is derived from internal model scores and price rules; community averages come from approved reviews (1–10 per category).
| Category | Genze /10 | Users /10 |
|---|---|---|
| Battery | 1.8 | — |
| Display | 4.8 | — |
| Performance | 2.3 | — |
| Camera | 4.8 | — |
| Body | 5.2 | — |
| Gaming | 3.4 | — |
| Software | 4.4 | — |
| Connectivity | 5.8 | — |
| Sensors | 7.2 | — |
| Software updates | — | — |
| Clean software | — | — |
| Heating | — | — |
| Media | — | — |
Community columns fill in when reviews are approved.
Quick specifications
2.8"
240x320 pixels
3MP
Video recorder
1000mAh
Score breakdown
From specs, price tier & release year
Community ratings
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Full specifications
|
Network
|
Technology | No cellular connectivity |
|---|---|---|
| 2G bands | GSM - SIM 1 & SIM 2 | |
| GPRS | Yes | |
| EDGE | Yes |
|
Launch
|
Announced | 2012 |
|---|---|---|
| Status | Discontinued |
|
Body
|
Dimensions | - |
|---|---|---|
| Weight | - | |
| SIM | Dual SIM (Mini-SIM) |
|
Display
|
Type | TFT |
|---|---|---|
| Size | 2.8 inches, 24.3 cm2 | |
| Resolution | 240 x 320 pixels, 4:3 ratio |
|
Memory
|
Card slot | microSDHC (dedicated slot) |
|---|---|---|
| Phonebook | 2000 entries | |
| Call records | Yes |
|
Main Camera
|
Single | 3.15 MP |
|---|---|---|
| Features | LED flash | |
| Video | Yes |
|
Selfie camera
|
??? | No |
|---|
|
Sound
|
Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
|
Comms
|
WLAN | No |
|---|---|---|
| Bluetooth | 2.0 | |
| Positioning | No | |
| NFC | No | |
| Radio | FM radio, recording | |
| USB | microUSB |
|
Features
|
Sensors | Proximity |
|---|---|---|
| Messaging | SMS, MMS, Email | |
| Games | Yes | |
| Java | Yes | |
| ??? | Audio/video player Photo viewer Organizer |
|
Battery
|
Type | Li-Ion 1000 mAh, removable |
|---|
|
Misc
|
Colors | Black |
|---|---|---|
| Price | About 40 EUR |
Karbonn KT21 Express official images
Frequently asked questions
Is Karbonn KT21 Express worth buying in 2026?
Karbonn KT21 Express is worth considering if its strengths match your priorities. Genze scores it 3.8/10 for its class. Read owner reviews and compare alternatives before you buy.
What is the battery capacity of Karbonn KT21 Express?
Karbonn KT21 Express has a 1,000 mAh battery. Real-world endurance depends on chipset efficiency, display, and usage.
What display size does Karbonn KT21 Express have?
Karbonn KT21 Express features a 2.80-inch display. See the Display section for resolution, refresh rate, and panel details.
What is the Genze score for Karbonn KT21 Express?
Genze rates Karbonn KT21 Express 3.8/10 based on performance, display, camera, battery, body build, and value versus phones in the same price tier.
Where do these specifications come from?
Specifications are compiled from official manufacturer and carrier sources, reviewed by our editors where possible, and enriched with Genze scores and community feedback. GenZe Rank is not responsible for errors or omissions. Regional variants, firmware updates, and retailer listings may differ from what is shown here—always confirm critical details on the official product page before you buy.
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