The model number BLK-AL20 corresponds to the Huawei Y6 Pro (2019), a mid-range *artphone. Here are the key details:

Release Date: Launched in 2019.
Key Specifications:
Display: 6.09-inch HD+ IPS LCD.
Processor: MediaTek MT6761 Helio A22 (12nm chipset).
Memory: 3GB RAM + 64GB storage (expandable via microSD).
Camera: 13MP rear + 2MP depth sensor; 8MP front camera.
Battery: 3,020mAh with standard charging.
OS: Android 9 Pie with EMUI 9.1 (no Google Play Services due to Huawei's restrictions at the time).
Design: Plastic body with a waterdrop notch display.
Market: Primarily released in Asian markets like Thailand, Vietnam, and the Philippines. The "AL20" suffix indicates a regional variant for these areas.
If you're troubleshooting or seeking parts, ensure compatibility with this specific model. For software updates or features, check Huawei's official support page for the Y6 Pro (2019).