The Galaxy A5 16GB Smartphone from Samsung delivers powerful performance and dual-SIM capability in a sleek aluminum uni-body design. The A5 Duos is powered by an octa-core 1.6 GHz ARM Cortex A53 processor and has 2GB of RAM in support. It also comes equipped with 16GB of storage and supports microSDXC cards up to 128GB. The A5 features built-in dual SIM card slots, which give you the ability to have two separate phone numbers on the same device. One of the SIM card slots functions as a hybrid slot that accepts microSDXC cards-however, because it's a hybrid slot, you won't be able to have a microSD card installed if you're using the A5 as a dual-SIM device.