The vivo iQOO 15 Ultra is a 2026 Android 16, up to 5 major Android upgrades, OriginOS 6 smartphone powered by the Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) with 16GB | 24GB and 1TB | 256GB | 512GB internal storage. It features a 6.8", AMOLED, 1B colors, 144Hz, PWM, Dolby Vision, HDR10+, HDR Vivid, 1000 nits (typ), 2600 nits (HBM), 8000 nits (peak), 1440.0x3168.0 display and is available in Black, Silver.

The iQOO 15 Ultra is equipped with a Si/C Li-Ion 7400 mAh, a 50 MP, 8K@30fps, 4K@24/30/60fps, 1080p@30/60/120/240fps, gyro-EIS main camera, a 32 MP, 4K@30/60fps, 1080p@30/60fps front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 227 g.

Clearing the cache partition on your vivo iQOO 15 Ultra 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.