Can we reset the passcode on a phone and how?
How can you reset the passcode on a iphone se?
I'm confused.
Do you know the current iPhone passcode and merely want to change it?
Settings > Touch ID & Passcode > Change Passcode
_____
You said "Can we reset ...". Hopefully there is only one person using this iPhone. Are you asking about transferring ownership? If so ... What to do before you sell or give away your iPhone, iPad, or iPod touch - Apple Support
Be certain the new owner has a different Apple ID than the previous one.
