The Samsung Galaxy S21 Ultra 5G is a 2021 Android 11, up to 4 major Android upgrades, One UI 7 smartphone powered by the Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China with 12GB | 16GB | 8GB and 128GB | 256GB | 512GB internal storage. It features a 6.8", Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak), 1440.0x3200.0 display and is available in Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy.

The Galaxy S21 Ultra 5G is equipped with a Li-Ion 5000 mAh, a 108 MP, 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS main camera, a 40 MP, 4K@30/60fps, 1080p@30fps front camera. The device uses a · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time) configuration. It weighs 227 g.

Clearing the cache partition on your Samsung Galaxy S21 Ultra 5G removes temporary system files that accumulate over time and can cause slowdowns, crashes or boot issues. Unlike a factory reset this process does not delete any personal data, photos, apps or settings, making it a safe first step when troubleshooting performance problems.

Clears temporary system files without deleting personal data.