To use letters instead of numbers in your iPhone passcode, open Settings > Face ID & Passcode (or Touch ID & Passcode), tap Change Passcode, enter your current passcode, then tap Passcode Options and choose Custom Alphanumeric Code. Type a new passcode that uses letters, numbers, or both, and confirm it.
Quick Answer
Settings > Face ID & Passcode > Change Passcode > Passcode Options > Custom Alphanumeric Code.
Set an Alphanumeric Passcode
- Open Settings and tap Face ID & Passcode or Touch ID & Passcode.
- Enter your current passcode.
- Tap Change Passcode and enter the current passcode again.
- On the new passcode screen, tap Passcode Options.
- Choose Custom Alphanumeric Code.
- Type your new passcode, tap Next, then enter it again and tap Done.

Passcode Types Compared
| Type | Security | Convenience |
|---|---|---|
| 4-Digit Numeric Code | Lowest | Fastest to type |
| 6-digit code (default) | Good for most people | Quick |
| Custom Numeric Code | Better with more digits | Number pad stays |
| Custom Alphanumeric Code | Strongest | Full keyboard; slower to type |
With Face ID or Touch ID on, you’ll rarely type the passcode, so a longer alphanumeric code costs little day to day.
Tips
- Use a phrase you can remember but others can’t guess, not your name or birthday.
- Your iPhone may also ask for the passcode after restarts and software updates, so make sure you remember it.
- If you use Stolen Device Protection, some changes need Face ID or Touch ID and a security delay when you’re away from familiar places.
Troubleshooting
- Passcode Options is missing: A work or school profile may require a specific passcode type. Check Settings > General > VPN & Device Management.
- Worried about failed attempts? See the Erase Data setting.
- Forgot the new passcode: You’ll need to erase and restore the iPhone; after several failed attempts, iOS offers recovery options on the lock screen.
Frequently Asked Questions
Can I switch back to a numeric passcode?
Yes. Change the passcode again and choose a numeric option in Passcode Options.
Does this change my Apple Account password?
No. The passcode only unlocks the device.
Summary
- Settings > Face ID & Passcode > Change Passcode.
- Tap Passcode Options.
- Choose Custom Alphanumeric Code.
- Enter and confirm your new passcode.

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.