Yes, microUSB v2.0 (MHL 2), USB On-the-go, USB Host
Yes, microUSB v2.0
Yes, with A-GPS support and GLONASS
Yes, with A-GPS support
HTML5, Adobe Flash
User Memory Samsung I9502 Galaxy S4 Duos and Karbonn A12+ call records, phonebook, internal and external memory, storage comparison.
16/32/64 GB storage, 2 GB RAM
4 GB (1.27 GB for apps, 1.24 GB user available), 512 MB RAM
microSD, up to 64 GB
microSD, up to 32 GB
Sensors Check whether Samsung I9502 Galaxy S4 Duos and Karbonn A12+ has fingerprint, NFC, proximity sensor, light sensor, accelerometer sensor, magnetic field sensor, gyroscope, barometer sensor or heart-rate sensor?
Battery Samsung I9502 Galaxy S4 Duos or Karbonn A12+, which has the higher battery capacity and talk time?