Issue Description
iOS update fails to download or install.
Common Causes
Insufficient storage
Weak Wi-Fi
Apple server issues
Step-by-Step Solution
Step 1: Check Storage Space
Ensure at least 6 – 8 GB free
Step 2: Restart iPhone
Clears update cache
Step 3: Update Using Computer
Use Finder or iTunes
Step 4: Retry Update on Stable Wi-Fi
Avoid VPNs or mobile data
Explore Further
Delete update file and re-download
Prevention & Best Practices
Back up before updates.