Samsung Galaxy A15 specification by google:

Display

• Size: 6.1 inches
• Type: LTPS IPS LCD
• Resolution: 1080 x 2340 pixels (FHD+), 19.5:9 aspect ratio
• Pixel Density: ~409 ppi

Processor

• Chipset: Hisilicon Kirin 710 (12 nm)
• CPU: Octa-core
  • 4×2.2 GHz Cortex-A73
  • 4×1.7 GHz Cortex-A53
• GPU: Mali-G51 MP4

Memory & Storage

• RAM: 4GB
• Internal Storage: 128GB
• Expandable Storage: microSD, up to 256GB (uses SIM 2 slot)

Cameras

• Rear Cameras (Dual Setup):
  • Main: 16 MP, f/2.2, PDAF
  • Depth Sensor: 2 MP, f/2.4
  • Features: HDR, panorama, LED flash
  • Video Recording: 1080p@30fps
• Front Cameras (Dual Setup):
  • Main: 24 MP, f/2.0
  • Depth Sensor: 2 MP
  • Features: AI beauty mode, HDR
  • Video Recording: 1080p@30fps

Battery

• Capacity: 3340 mAh, non-removable
• Charging:
  • 10W fast charging
  • MicroUSB 2.0 port (no USB Type-C)

Operating System

• Out of the Box: Android 8.1 (Oreo), EMUI 8.2
• Upgradeable: Up to Android 9.0 (Pie) with EMUI 9.1

Connectivity

• Dual SIM (Nano-SIM, dual stand-by)
• 4G LTE support
• Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
• Bluetooth 4.2, A2DP, LE
• GPS with A-GPS, GLONASS, BDS
• MicroUSB 2.0, OTG support
• No NFC support

Design

• Dimensions: 157.6 x 75.2 x 7.6 mm
• Weight: 169 grams
• Material: Glass front and back, aluminum frame
• Colors Available:
  • Black
  • Pearl White
  • Iris Purple