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- 503 User Ratings
- Last Updated: 19th October 2025
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Display 4.00-inch (480x800)
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Processor Spreadtrum SC9832A
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Front Camera 0.3MP
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Rear Camera 2MP
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RAM 1GB
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Storage 8GB
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Battery Capacity 1400mAh
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OS Android 7.0
Karbonn A40 Indian Review
By Roydon Cerejo (Nov 13, 2017)- Design
- Display
- Software
- Performance
- Battery Life
- Camera
- Value for Money
- Good
- Stock Android 7
- Sturdy and lightweight
- Dedicated microSD card slot
- Bad
- Weak all-round performance
- Poor cameras and battery life
- Display has bad viewing angles
The Karbonn A40 Indian recently shot into the spotlight as Airtel’s new initiative to take on Reliance Jio’s ‘effectively free’ Jio Phone. The main difference between the two is that Airtel boasts of providing an Android smartphone for an effective price of Rs. 1,349 (versus the ‘smart’ feature phones provided by Reliance and BSNL), provided you abide by Airtel’s recharge policy in order to get the cashbacks.
Karbonn A40 Indian Summary
The Karbonn A40 Indian sports a candybar form factor and a plastic body. The 4-inch display has very weak viewing angles so the colours warp easily when you tilt the phone upwards or downwards even slightly. The phone is powered by a Spreadtrum quad-core SoC and has 1GB of RAM and 8GB of storage. Performance is pretty mediocre as even stock Android 7 doesn’t run very smoothly. Apps take a while to load and the phone can only handle basic games. The 2-megapixel rear camera captures poor details even under good lighting. Battery life is also weak, and the 1400mAh battery struggles to last an entire day.
Karbonn A40 Indian Price in India
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- 10% off on Axis Bank Credit Cards, up to ₹750
- 5% off on Flipkart Axis Bank Co Brand Card
- 10% off on Kotak Bank Credit Cards
- Get Google Nest hub at ₹4999
- Google Nest mini- attach 1999
- Flat ₹50 Cashback on Paytm Wallet
- 5% Cashback on Flipkart Axis Bank Card
- Flipkart Pay Later Sign-Up Offer
Karbonn A40 Indian price in India starts from ₹ 2,500. The lowest price of Karbonn A40 Indian is ₹ 2,500 at Amazon on 19th October 2025.
Karbonn A40 Indian Full Specifications
| Brand | Karbonn |
| Model | A40 Indian |
| Price in India | ₹2,500 |
| Release date | July 2017 |
| Form factor | Touchscreen |
| Dimensions (mm) | 122.95 x 64.30 x 10.50 |
| Weight (g) | 118.00 |
| Battery capacity (mAh) | 1400 |
| Removable battery | Yes |
| Colours | Blue, Coffee Brown, Black, Champagne |
| SAR value | 1.39 |
| Screen size (inches) | 4.00 |
| Touchscreen | Yes |
| Resolution | 480x800 pixels |
| Processor | 1.3GHz quad-core |
| Processor make | Spreadtrum SC9832A |
| RAM | 1GB |
| Internal storage | 8GB |
| Expandable storage | Yes |
| Expandable storage type | microSD |
| Expandable storage up to (GB) | 32 |
| Rear camera | 2-megapixel |
| Rear flash | Yes |
| Front camera | 0.3-megapixel |
| Operating system | Android 7.0 |
| Wi-Fi | Yes |
| Wi-Fi standards supported | 802.11 b/g/n |
| GPS | No |
| Bluetooth | Yes, v 4.00 |
| NFC | No |
| Infrared | No |
| USB OTG | No |
| Headphones | 3.5mm |
| FM | Yes |
| Number of SIMs | 2 |
| Wi-Fi Direct | No |
| Mobile High-Definition Link (MHL) | No |
| SIM 1 | |
| SIM Type | Regular |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | Yes |
| Supports 4G in India (Band 40) | Yes |
| SIM 2 | |
| SIM Type | Regular |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | Yes |
| Supports 4G in India (Band 40) | Yes |
| Compass/ Magnetometer | No |
| Proximity sensor | Yes |
| Accelerometer | Yes |
| Ambient light sensor | No |
| Gyroscope | No |
| Barometer | No |
| Temperature sensor | No |
Karbonn A40 Indian User Review and Ratings
502 reviews
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great come back offer from airtel smartphone with karbonn A40 IndianMohammed (Oct 15, 2017) on Gadgets 360 RecommendsIts a great phone but its minus that it has only 1400 mah battery and its offer has a limit of daily usage and only gets 500 mb per day camera is not so good but I am 4/5 because its a coming back to form time for airtel and all the best for that bit you can give direct information about of book at which time and place thank you Thank youIs this review helpful?
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Battery life &performanceDhairysheel Pawar (Dec 18, 2019) on Gadgets 360 RecommendsThis phone is very slow & the performance is not good. The phone is not running in good. I have suggested for the this product how I'm increasing this phone memoryIs this review helpful?
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Good Android phone under 4kRoy (Aug 9, 2017) on AmazonBest phone for daily usage purpose.. I bought it for my mom as it go Volte and JIO supported.. Build quality also good and rest of other are average..Is this review helpful?
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GoodPROSEN BISWAS (Oct 28, 2019) on AmazonGoodIs this review helpful?
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excellentAmazon Customer (Oct 3, 2019) on Amazonvery good productIs this review helpful?
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