Performance
Operating on Android 4.4.2 KitKat, the Celkon A403 offers a simplistic user interface that is characteristic of this older version of Android. It runs on the Spreadtrum SC7715 chipset with a 1.0 GHz CPU, which is capable of handling basic user requirements. The internal storage is limited to 4GB, with only 512MB of RAM, which restricts its multitasking capabilities and app installations. However, a microSD card slot is available, allowing users to expand the storage, better accommodating their needs for media and apps.