Your partner knows your passcode
Sharing a passcode with a partner is common. Here is how to keep a few private things private without breaking trust.
Maybe you told them years ago so they could answer a call while you were driving. Maybe they just watched you type it. Now you have a gift idea, a journal, or a friend's confidence on your phone, and you realize the phone is not quite only yours.
That feeling is normal. Wanting a little room of your own is not the same as hiding something wrong.
First, ask yourself one question
Does your partner know the passcode because you shared it freely, or because they insist on it? If they check your phone to keep tabs on you, get upset when you change it, or you feel afraid of how they would react, skip the steps below for now and read the safety note at the end. Changing things on your phone can be noticed, and your safety comes before your settings.
If it feels safe, start with a sentence
Often the easiest fix is a short, unremarkable talk. Something like: "I'm going to change my passcode, it's nothing about you, I just want my phone to feel like mine." Most partners take that well, especially if you offer the same courtesy back.
This week
Change the passcode to one you have not used before, and shield the screen when you type it for the first few weeks. A longer code is harder to learn by watching. Then check that nobody else's face or fingerprint is enrolled. On iPhone, look in Face ID settings for an alternate appearance. On Android, search Settings for "fingerprint" and "face".
Two quieter leaks are worth a look too. Message previews on the lock screen can show more than you meant, so set them to appear only when unlocked. And a shared Apple Account, Google account or family photo library can show your pictures on their device no matter what your phone's passcode is. Our guide on how family sharing can expose your photos walks through where to check.
For the few things that are really yours
The iPhone Hidden album, Google Photos Locked Folder and Samsung Secure Folder all keep photos out of casual view. Their limit here is simple: most of them open with the same passcode or face as the phone. If the person you want to keep out knows that passcode, they are a curtain rather than a lock.
A separate vault with its own unlock closes that gap. VaultWell, coming soon, opens each vault with a path you trace that has nothing to do with your phone passcode. A locked note in Apple Notes with its own password does something similar for writing.
What none of this fixes
A partner may notice a new passcode or an app they do not recognize, and ask. That conversation is usually better had openly than avoided. No setting replaces trust in either direction.
If you feel unsafe, a phone can be monitored in ways that are hard to see. Consider using a safer device to look for help. In the US, the National Domestic Violence Hotline is 1-800-799-7233, or text START to 88788 (thehotline.org). Elsewhere, contact local domestic violence services.