Samsung Galaxy S21 Ultra 5G - 512 GB - Phantom Black (Unlocked) for sale online | eBay
For anyone wanting to expand their S21 storage, I recommend portable SSDs from Samsung. Smaller than a credit card, connects directly to your phone, and optional password lock encryption on the drive.
SAMSUNG Galaxy S21 FE 5G Cell Phone, Factory Unlocked Android Smartphone, 128GB, 120Hz Display Screen, Pro Grade Camera, All Day Intelligent Battery, ...