The Samsung Galaxy S9+ was released in March 2018 as the successor to the Galaxy S8+. It was part of Samsung's flagship lineup and offered several improvements over its predecessor. Here are some key specifications and features of the Samsung Galaxy S9+:

1. Display: 6.2-inch Super AMOLED Quad HD+ display with a resolution of 2960 x 1440 pixels.
2. Processor: Depending on the region, it came with either the Qualcomm Snapdragon 845 or Samsung's in-house Exynos 9810.
3. RAM: 6GB
4. Storage: 64GB/128GB/256GB internal storage with a microSD card slot for expansion up to 400GB.
5. Camera: Dual rear camera setup with a 12-megapixel primary sensor with Dual Pixel technology and a 12-megapixel telephoto sensor. An 8-megapixel front-facing camera was also included.
6. Battery: Non-removable 3500mAh battery with fast charging and wireless charging support.
7. Operating System: Launched with Android 8.0 Oreo and received subsequent updates.

The Samsung Galaxy S9+ was praised for its excellent display, capable camera system, and overall performance. Since it's a couple of years old, it might be challenging to find brand new units for purchase, and you may want to explore newer Samsung smartphone models for the latest features and performance. Samsung has continued to release new iterations of the Galaxy S and Galaxy Note series since then, offering more options for consumers to choose from.