Discussions are now open! Start your own threads and share your thoughts with the community. Home Karbonn Phones You are here Updated : Mar 27, 2015, 4:07 AM Karbonn A21 Full Specifications 4GB 4.5-inch Single camera 1800 mAh Be the first to review this phone I want it 0 users I have it 0 users I had it 0 users Popular Comparisons The Karbonn A21 is most commonly compared with these phones: Karbonn A21 vs Samsung Galaxy A03 Karbonn A21 vs Samsung Galaxy A14 5G Design Colors White Display Size 4.5-inch Resolution 800x480px, 207 PPI Hardware Processor Dual-core1200 MHz Internal storage 4GB Storage expansion microSDHC up to 32 GB OS Android (4.0) Battery Capacity 1800 mAh Camera Rear Single camera Main camera 5 MP (Autofocus) Flash LED Video recording Yes Front 1.3 MP Connectivity & Features Bluetooth Yes WLAN 802.11 b,g,n USB microUSB Location GPS, A-GPS Multimedia Broadcast Mobile TV Yes Speakers Loudspeaker Features Album art cover, Background playback Cellular 3G Bands 1(2100) Data Speed HSDPA 7.2 Mbit/s, UMTS Dual SIM Yes Phone Features Notifications Music ringtones, Vibration Other features Voice dialing, Voice commands, Voice recording Despite our efforts to provide full and correct Karbonn A21 specifications, there is always a possibility of admitting a mistake. If you see any wrong or incomplete data, please LET US KNOW. If you are interested in using our specs commercially, check out our Phone specs database licensing page. Latest News Huawei's next AP for the Mate 80 series rumored to have 20% hike in performance TikTok is splitting into two apps for America Display manufacturer BOE projected to score a major win with Apple I tried using China's best flagship phone, but it fought me every step of the way If Samsung Foundry gets this job, the whole industry should be prepared for a major shakeup With iPhone 17 and Galaxy S26, Apple and Samsung are diverging hardware strategies Popular stories New T-Mobile offer will tie customers not currently financing devices to the company Fold 7 and Flip 7 to hit the shelves earlier than previously rumored Amazon Galaxy Z Fold 7 listing might make you fall deeper in love with Samsung's next foldable Three Pixel 10 Pro features that could make me switch back to Google in 2025 Samsung is having major profitability issues due (among others) to poor Galaxy S25 series sales Samsung's groundbreaking tri-fold phone will cost a fortune and pack 'top-of-the-line' specs