Skip to content
StateMaps

How to Lock On Call Central on iPhone

iOS 18 Face ID lock and Hidden folder · Acumantra Solutions, Inc. · checked November 2026

Time needed
4 taps
Needs iOS 18 or later

Works for On Call Central whether or not it has its own passcode. No download needed.

Short answer

Touch and hold On Call Central's icon, tap Require Face ID, then confirm. On iOS 18 and later that puts On Call Central behind Face ID, Touch ID or your passcode; choose Hide and Require Face ID instead to move it into App Library's Hidden folder as well.

Lock On Call Central with Face ID

  1. Find On Call Central on your Home Screen or in App Library.
  2. Touch and hold the icon until the quick-actions menu opens.
  3. Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
  4. Tap Require Face ID again to confirm. On Call Central now asks for authentication every time it opens.

To test it, close On Call Central from the App Switcher and open it again. You should see the Face ID prompt before any content appears.

Hide On Call Central in App Library

  1. Touch and hold On Call Central's icon and tap Require Face ID.
  2. Choose Hide and Require Face ID instead of Require Face ID.
  3. Confirm. The icon leaves your Home Screen and moves to the Hidden folder at the bottom of App Library.
  4. To open it later, swipe to App Library, tap Hidden and authenticate.

Hiding also locks the app. To undo either, touch and hold the icon again and choose Don't Require Face ID.

Why lock On Call Central?

On Call Central's privacy label lists user content — the kind of data you would not want on screen if someone borrows your unlocked phone. Medical-record apps hold diagnoses, prescriptions and insurance details. Patient portals from your provider are bound by health-privacy rules in a way most standalone apps are not.

Medical apps may hold the most sensitive data on your phone. Whether US health-privacy law applies depends on who runs the app, not on the App Store category.

A lock answers one question — who can open the app on this iPhone. It does not change what On Call Central sends to its developer; for that, see On Call Central's full privacy report.

What the lock does and does not do

It does

  • Ask for Face ID, Touch ID or passcode every time On Call Central opens
  • Hide message previews in notifications
  • Keep On Call Central's content out of Spotlight and Siri suggestions
  • With Hide, remove the icon from the Home Screen

It does not

  • Stop someone who knows your passcode
  • Encrypt or change how On Call Central stores data
  • Sync to your iPad or other devices
  • Remove On Call Central from purchase history or Screen Time reports

Don't see Require Face ID?

  • Update to iOS 18 or later in Settings › General › Software Update.
  • Make sure a passcode is set in Settings › Face ID & Passcode; the lock needs one.
  • Some Apple apps (Settings, Calculator, Camera, Maps, Find My, Clock) cannot be locked or hidden.
  • If your iPhone is managed by work or school, the option may be restricted.

Other settings worth checking for On Call Central

  1. Tracking

    Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.

  2. Photos

    Settings › Privacy & Security › Photos. Limited Access lets you pick exactly which pictures the app can see; Add Photos Only lets it save without reading your library.

  3. Health

    Health app › your profile picture › Apps › On Call Central. Turn categories on one at a time; the app cannot tell which ones you declined.

  4. Sign-in

    When creating an account, Sign in with Apple can give the app a relay address from Hide My Email instead of your real one.

  5. Notifications

    Settings › Notifications › On Call Central › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

On Call Central's full privacy label

App Privacy label Developer-reported · checked November 1, 2026
Used to track you
0types

None declared

Linked to you
5types
Not linked to you
0types

None declared

Is On Call Central safe? Every data type explained →

Lock these apps too

After you lock On Call Central

Tick what you have done
Tick each step as you do it on your iPhone.

Done. You have applied every control the label points to.

FAQ

Does On Call Central have its own passcode?
Some apps offer an in-app PIN or biometric lock in their settings. The App Store privacy label does not say whether On Call Central does; the iOS 18 lock works regardless.
What happens to On Call Central's notifications when it is locked?
Locked and hidden apps do not show message previews or content in notifications, and their content does not appear in Spotlight search or Siri suggestions.
Can someone who knows my passcode open a locked app?
Yes. If Face ID fails, the lock falls back to your device passcode. Keep the passcode private if the lock matters to you.
Is a locked On Call Central encrypted?
The lock controls who can open the app on this iPhone. It does not change how the app stores or syncs data. Encryption depends on the developer and on your device passcode.
Why can't I see the Require Face ID option?
You need iOS 18 or later. Some Apple apps such as Settings, Calculator, Maps and Camera cannot be locked or hidden.
Does hiding On Call Central remove it from my purchase history?
No. Hidden apps still appear in App Store purchases and in Settings › Apps, and Screen Time reports still include them.

Is On Call Central safe? Full privacy report →Does On Call Central track you? →Lock an app: A–Z →All medical apps →

Facts on this page come from Apple: lock or hide an app on iPhone, as reported by the developer. Checked November 2026. How we collect data · Report a correction