Phone · Samsung
Galaxy S21 Ultra
Overview of the Samsung Galaxy S21 Ultra Released as Samsung's flagship powerhouse, the Galaxy S21 Ultra 5G set a high benchmark for premium smartphone engineering. Featuring a massive 6.8 inch Dynamic AMOLED 2X curved display with a 120Hz refresh rate, S Pen compatibility, and an advanced rear camera system with a 108MP main sensor and 100x Space Zoom telephoto hardware, the S21 Ultra was designed for power users, photographers, and business professionals. Powered by the Snapdragon 888 processor paired with up to 16GB of RAM and a 5000mAh battery, this phone continues to offer top tier perfo…
DIY guides
Fix this device step by step
Screen Replacement
Samsung Galaxy S21 Ultra Screen Replacement Repair Guide
INTERMEDIATE · ~49 min
Battery Replacement
Samsung Galaxy S21 Ultra Battery Replacement Repair Guide
INTERMEDIATE · ~44 min
Charging Port Repair
Samsung Galaxy S21 Ultra Charging Port Repair Repair Guide
INTERMEDIATE · ~42 min
Rear Camera Repair
Samsung Galaxy S21 Ultra Rear Camera Repair Repair Guide
INTERMEDIATE · ~60 min
Front Camera Repair
Samsung Galaxy S21 Ultra Front Camera Repair Repair Guide
INTERMEDIATE · ~45 min
Rear Camera Lens Repair
Samsung Galaxy S21 Ultra Rear Camera Lens Repair Repair Guide
INTERMEDIATE · ~30 min
Speaker Repair
Samsung Galaxy S21 Ultra Speaker Repair Repair Guide
INTERMEDIATE · ~44 min
Microphone Repair
Samsung Galaxy S21 Ultra Microphone Repair Repair Guide
INTERMEDIATE · ~30 min
Volume Button Repair
Volume Button Repair Guide for Galaxy S21 Ultra
INTERMEDIATE · ~30 min
Power Button Repair
Power Button Repair Guide for Galaxy S21 Ultra
INTERMEDIATE · ~45 min
Water Damage Repair
Samsung Galaxy S21 Ultra Water Damage Repair Repair Guide
ADVANCED · ~69 min
Logic Board Repair
Samsung Galaxy S21 Ultra Logic Board Repair Repair Guide
ADVANCED · ~53 min
Back Cover Replacement
Samsung Galaxy S21 Ultra Back Cover Replacement Repair Guide
ADVANCED · ~29 min
Fingerprint Sensor Repair
Samsung Galaxy S21 Ultra Fingerprint Sensor Repair Repair Guide
ADVANCED · ~34 min
Common problems
Start from the symptom
Samsung Tab Flickering Screen
A flickering Samsung Galaxy Tab screen usually stems from system refresh rate glitches, a loose display flex cable, or failing AMOLED display hardware.
Samsung Tab A Keeps Restarting
If your Samsung Galaxy Tab A keeps rebooting, cycling on the Samsung logo, or shutting down randomly, soft software glitches or a failing battery are usually to blame. Here is how to diagnose and fix it.
Samsung Galaxy Tab 10.1 Won T Turn On
Troubleshooting steps for a Samsung Galaxy Tab 10.1 that refuses to power on or charge. Learn how to force restart, revive a deeply drained battery, and diagnose internal hardware faults.
Phone Speaker Not Working Samsung
Is your Samsung phone speaker muffled, crackling, or completely silent during calls and media? Before replacing hardware, follow this DIY troubleshooting guide to isolate software glitches, clean clogged speaker grills, and diagnose internal speaker failures.
No Volume On Samsung Phone
If your Samsung Galaxy phone has completely lost sound through its main speakers or earpiece, this guide helps you diagnose software glitches, stuck audio modes, and hardware speaker failures.
No Sound On My Samsung Phone
If your Samsung phone suddenly stops playing audio through the main speaker or earpiece, it could be a software conflict, stuck Bluetooth connection, or physical speaker damage. Here is how to isolate the issue and restore sound on your Galaxy device.
My Samsung Won T Connect To Wi‑Fi
Experiencing Wi-Fi connectivity issues with your Samsung phone can be frustrating, but there are several steps you can take to troubleshoot the problem yourself.
My Samsung Screen Is Black
If your Samsung Galaxy screen went completely dark but the phone still vibrates, rings, or gets warm, you are likely facing an AMOLED panel failure or a frozen system kernel. Here is how to diagnose the issue and determine if you need a screen replacement.
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