How to fix iPhone 14 drains battery overnight in standby

If your iPhone 14 drains battery excessively overnight while in standby, use these steps to identify and fix the drain.

Method 1: Check Battery Usage Details

Go to Settings > Battery and scroll to see background activity.
Look for apps showing significant “Background Activity.”
If an app is unusually high, force-close it or disable Background App Refresh for that app in Settings.

Too many apps refreshing in the background can cause overnight drain.

Apps that track location in the background consume power.

Settings > Privacy & Location Services.
Review apps with “Always” permission; change to “While Using” or “Never” as appropriate.
Also disable Location Services for system services you don’t need.

Frequent push email can wake the phone repeatedly.

Settings > Mail > Accounts > Fetch New Data.
Set each account to “Fetch” with a longer interval (e.g., hourly) or “Manual” instead of Push.

Poor cellular signal forces the phone to work harder, draining battery.

If you have low bars overnight, consider enabling Airplane Mode while sleeping, or turn off cellular temporarily.
Also check if Wi-Fi calling is helping or hurting.

Battery drain bugs are sometimes addressed in updates.

If misconfiguration persists, reset settings to defaults (does not delete data).

Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings.
Wait for reboot; then reconfigure critical settings (Wi-Fi, Bluetooth) and monitor overnight drain.

If the battery is old and degraded, it may not hold charge well and can drain quickly.

Check Settings > Battery > Battery Health; if Maximum Capacity is below 80%, consider battery replacement.

Normal overnight drain for an iPhone 14 should be minimal (a few percent). Excessive drain is usually fixable with software tweaks.