Released 2026
iPhone Duo
The iPhone Duo runs iOS 27, so it has the current set of Settings screens. Its hardware still decides which of them appear.
The basics
What people look up on the iPhone Duo
Optimized Battery Charging
Available Battery and chargingYour iPhone learns your daily routine and holds the charge near 80 percent, finishing the last part just before you normally unplug it.
Settings > Battery > Charging > Optimized Battery Charging
Allow Apps to Request to Track
Available Privacy and securityTurning this off means no app can even ask to follow what you do in other companies' apps and websites, and every app is treated as if you said no.
Settings > Privacy & Security > Tracking
Battery Health
Available Battery and chargingThis screen shows what percentage of its original capacity your battery still holds, and warns you when it has aged enough to affect the phone.
Settings > Battery > Battery Health
Location Services
Available Privacy and securityLocation Services is the master list of every app that can use your position, and the level of access each one has.
Settings > Privacy & Security > Location Services
Background App Refresh
Available General and systemBackground App Refresh lets apps fetch new content while they are closed, which keeps them current at the cost of battery and data.
Settings > General > Background App Refresh
Text Size
Available Display and appearanceOne slider changes text size across the system and every app that uses Dynamic Type, and Accessibility offers larger sizes still.
Settings > Accessibility > Display & Text Size > Larger Text
Allow Notifications
Available Notifications and FocusEach app has its own notification switch, plus separate control over the Lock Screen, banners, notification centre, sounds and badges.
Settings > Notifications > App name > Allow Notifications
Find My iPhone
Available Find My and safetyFind My lets you locate your iPhone on a map, play a sound on it, mark it as lost, or erase it remotely, and it also enables Activation Lock.
Settings > Apple Account > Find My > Find My iPhone
What this iPhone has
These are the hardware facts the site uses to decide which settings to show you.
Biometrics
Camera
Cellular
Connectivity
Display
Hardware controls
Input
Intelligence
Power
Safety
What you will not find in Settings
The iPhone Duo does not have the hardware for these, so the matching settings never appear. That is normal and nothing is broken.
- Face ID
Areas of Settings on this iPhone
Device identity and setup
Apple Account and iCloud
Network and connectivity
Battery and charging
Display and appearance
Sound and haptics
Notifications and Focus
Privacy and security
Passwords and authentication
Siri, Apple Intelligence, and search
Camera and media capture
Photos
Phone, Messages, and FaceTime
Accessibility - vision
Accessibility - physical and motor
Accessibility - hearing and speech
Accessibility - cognitive
Screen Time and family
General and system
Keyboard and input
Apps and defaults
Wallet, payments, and identity
Find My and safety
Health, Fitness, and wellbeing
Shortcuts and automation
Device-specific hardware settings
Restart, recovery, backup, and transfer
Legacy iPhone behavior