Forgot my passcode to unlock my phone, how do I reset it to get into phone
My son forgot his unlock screen passcode
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If your device has iOS 15.2 or later installed, you can reset it without a computer; check out this link→How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support. Otherwise you will need a computer:
See this Apple support link→If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support
Or watch this companion video ⬇️
After restoring the phone using one of the methods above you can restore your most recent backup.