The Samsung Galaxy A90 5G has a FHD+ Super AMOLED Infinity-U Display with a U-shaped notch for the frontal camera, similar to the Galaxy A70. The phone has 6GB and 8GB RAM versions, with 128GB of internal storage. The 6GB RAM and 8GB RAM version's storage is expandable to 512GB via MicroSD card. The phone measures 164.8 x 76.4 x 8.4 mm and weighs, with a 4500 mAh battery. The phone also has a dual-SIM socket, and supports 25W Super Fast Charging with a USB C cable. It also does not come with a headphone jack.
Camera
The phone has a triple-lens camera composing of a 48MP f/2.0 wide-angle lens, 8MP f/2.2 ultra-wide angle lens with a 123 degree field of view, and a 5MP 3D depth sensor. The 3D depth sensor can work with the other lenses to simulate a Bokeh effect through a "live focus" mode. There is a 32MP f/2.0 frontal camera also supporting the live focus mode. The camera also has Samsung's scene optimizer technology that recognizes various scenes and automatically adjusts the camera settings. The phone also can record 4K video through the camera application.
5G connectivity
The Galaxy A90 5G is Samsung's first mid-range smartphone to feature 5G network connectivity, with a starting price of 900,000 Korean Won.
Software
The Galaxy A90 runs on Android Pie with Samsung's One UI skin, similar to other Samsung phones released in 2019, that repositions the touch area in stock Samsung apps towards the bottom. This enables the user to control the phone with one hand, despite its large screen size. It is also Samsung's first midrange phone to come with Samsung's DeX that allows users to connect the phone to a computer using a USB-C cable.
Reception
Max Parker of Trusted Reviews, along with GSM Arena, praised the 5G connectivity available for a lower price compared to flagship devices, while critiquing the fact that there are flagship devices without 5G available for similar or lower prices. Britta O'Boyle of Pocket Lint positively described the phone's screen, power, and 5G, recommending it for consumers considering purchasing a 5G device. TechRadar, in its hands-on review, also praised the phone's display and battery, while critiquing the weight of the device and the UI of the camera application. It also called the device one of the five best smartphones announced at the IFA 2019.