A device bearing the model code SM-A516V, which is believed to be the A51s 5G has been seen on Geekbench, the Wi-Fi Alliance and NFC Forum.
The Geekbench listing of the phone reveals that it will be powered by the Snapdragon 765G chipset with 6GB RAM. It got results of 622 points in the single-core test and 1,928 in the multi-core department and was running on Android 10.
The Wi-Fi Alliance listing also confirms the Android version and reveals that the phone will support dual-band Wi-Fi connectivity. The NFC Forum listing only confirms the presence of NFC connectivity.
The A51s 5G will likely probably have some of the same core specs and design with the A51 5G. More information should surface soon.