The left side of the phone is bare, save for the SIM card/microSD card ... that will accept up to 512GB cards. Out of the box, the A51 runs Android 10 with Samsung’s One UI customizations.

the A51 has two dedicated SIM slots and a separate microSD card tray. That’s nice to see. Related: The best Samsung phones I quite like the crazy color and design on the rear of the device.

Samsung doesn't specify the material used on the back of the A51 5G, and we're inclined ... choose whether to put in a second nano-SIM or a microSD card. Also here is the secondary mic.

How good can a $400 phone really be? When the device in question is the Samsung Galaxy A51, the answer is simple: very good. As the first real representative of the Galaxy A family in the US ...

and includes a Micro SD card slot for extra storage. Plastic back design is more durable. Three years of Android updates. The Galaxy A51 is a part of Samsung's push to dominate the low-end ...