iPhone Settings
Open "Settings" app and make the settings to:
Preserve Battery
- Bluetooth-> turn off unless it is in use
- Cellular->Cellular Data Options-->Voice & Data-->LTE
- Battery->Charging->80% (increase when necessary)
- General->Background App Refresh->Off
- Display & Brightness->Dark
- Display & Brightness->Auto-Lock->30 seconds
Privacy
- General->Airdrop->Receiving Off (when it is not in use)
- Privacy & Security->Analytics & Improvements->turn each option off
- Privacy & Security->Apple Advertising->turn off "Personalized Ads"
- Privacy & Security->Review options for each line, turn on/off accordingly
🚫 Do not grant access unless it's necessary (e.g. Contacts - shouldn't be widely used by any apps) - Privacy & Security->Location Services->System Services->iPhone Analytics->Off
- Privacy & Security->Location Services->System Services->Homekit->Off
- Privacy & Security->Location Services->System Services->Motion Calibration & Distance->Off
- Privacy & Security->Location Services->System Services->Share My Location->Off
- Privacy & Security->Location Services->System Services->Suggestions & Search->Off
(Note: Only turn off for: Compass Calibration, Emergency Calls & SOS, Find My iPhone, Satellite Connection) - Accessibility->Read & Speak->Detect Languages->Off
- Accessibility->Face ID & Attention->Require Attention for Face ID->Off
- Accessibility->Face ID & Attention->Attention Aware Features->Off
- Accessibility->Eye Tracking->Zoom on Keyboard Keys->Off
- Accessibility->Eye Tracking->Show Face Guidance->Off
Calls
- Accessibility->Touch->Prevent Lock to End Call->turn on
- Accessibility->Touch->Call Audio Routing->Automatic
- Accessibility->Touch->Auto-Answer Calls->Off
- Sounds & Haptics->Change with Buttons->turn off
- Action Button->Silent Mode
- Apps->Phone > Silence Unknown Callers->turn on
Camera
- Camera->Preserve Settings->Camera Mode
- Camera->Preserve Settings->Live Photo
iCloud Storage
iCloud comes with 5GB of free storage—use it for essentials.
iCloud storage is used to restore an iPhone from a backup stored in iCloud.
- iCloud->Storage->Others->tap the app with unwanted storage->Delete Data From iCloud->Delete->Permanently Delete
- iCloud->Saved to iCloud->See All->turn on for necessary apps (e.g. iCloud Mail, Notes, Contacts, etc.)
🚫 Do not store any passwords in the apps saved to iCloud - iCloud->iCloudBackup->make sure it shows recent date/time for last backup, if not, tap "Back Up Now"->upon the prompt, tap "Continue"
Download Files to iPhone instead of iCloud
- Apps->Safari > Downloads->On My iPhone
General
- Sounds & Haptics->Lock Sound->turn on
- Accessibility->Side Button->Press and Hold to Speak->Off (if Siri is not used)
- General->AirPlay & Continuity->Handoff->Off
- General->AirPlay & Continuity->Continuity Camera->Off
Music
- Apps->Music->Sound Check->Off
Browsing
- Apps->Safari > Tabs->Change from "Compact" to "Top" (to preserve the classic layout with better use of bookmark)
- Apps->Safari > Tabs->Allow Website Tinting->Off
Display
- Accessibility->Motion->Reduce Motion (remove unnecessary animation)
- Accessibility->Display & Text Size->Reduce Transparency (improve performance)