New features were introduced in the Galaxy A 2016 Series which includes metal and glass body, NFC which supports Samsung Pay, Samsung's Adaptive Fast charging feature and increased battery life.

This was the last Galaxy A series to use the TouchWiz user interface, before being superseded by Samsung Experience and One UI in later models.

The 2018 Galaxy A Series marked a major expansion for the lineup and introduces many high-end features for the first time in the Galaxy A series, including multi-lens camera, Infinity Display, Adaptive Fast Charging, IP68 certification, and revamped design.

Unlike all the previous models, the lineup shifts to the new two-digit nomenclature first introduced in the Galaxy S10.

It retains the higher-end features previously introduced in the Galaxy A 2018 series with several improvements, alongside a "waterdrop" notch display (also debuted in the Galaxy M series), higher battery capacity, newer SoCs, and higher memory capacity.

The series brought new features such as geometric design, newer and faster SoCs (compared to their predecessor), hole-punch display (on some devices) and increased RAM and storage options.

The series introduced larger screens (on both LTE and 5G versions compared to the previous generation which was only reserved for 5G versions), various camera upgrades, the return of the peach device color option after it was absent in two previous generations, and the return of Exynos chipsets (for A33 and A53) after it was last used on the A51 and A71.

The series consists of ten models, continuing the trend of smaller lineup compared to its peek with the Ax0 line.

Succeeding Tab A models didn't have the S Pen feature to reposition its series to the budget line-up.