How to Keep Your iPhone Alive When Your Battery's Dangerously Low
It used to be that when I went out late in the city, I'd play a rousing game of "How long can I keep my phone alive so I can listen to music on the way home?" I would throw my phone into airplane mode, turn the brightness down, and hope it would last until I made it back to my apartment.
Apple has since improved the way it handles battery life, though it doesn't do everything it could to ensure your phone stays on. There are a few more tricks of the trade you can use to keep your
Power Mode Is Your Friend
When your battery hits 20% (and subsequently 10%) you'll be prompted to either enable or dismiss Low Power Mode. Enabling the power saving feature will lower your screen's brightness; disable features like Airdrop, iCloud sync, and Continuity; minimize system animations; and reduce device performance. You'll see your battery icon change from black to yellow. When you charge your phone again, Low Power Mode will turn itself off.
If you're already out, turn on Low Power Mode in Settings > Battery before your phone gets near the 20% mark to start saving juice from the jump.
Disable Background Activity
Background activity like notifications, downloading podcasts, updating weather forecasts, and receiving messages from apps all draw power throughout the day. Go to Settings > General > Background App Refresh and disable the feature.
Turn Down the Brightness
Dimming your screen is an easy way to squeeze a bit more longevity out of your dying battery. Head to Settings > Display & Brightness, and from there you can futz with your device's brightness slider. Tired of dimming your screen, only to find it bright as day when you're outside? Make sure Auto-Brightness is off! It's right under the brightness slider.
Stop Trying to Make Fetch Happen
Your phone, either hourly or by the minute, is probably refreshing certain apps (like Mail) in the background. A nice trick for people with full, fat
LTE is great, but in terms of power consumption, it's less than ideal. As a subway rider, I can feel my iPhone heat up as it frantically searches for a cellular signal in between stations. To curb the heat and power draw, just disable your LTE connection in favor of the slower 4G connection. If you know you're not going to use your cellular data, you can also turn on Airplane Mode.
You can disable your LTE data by heading to Settings > Cellular > Celular Data Options > Enable LTE. Turning it off will force your phone to use the slower 4G network.
Turn Off Wi-Fi, Bluetooth
Using a Wi-Fi connection uses less power than a traditional cellular connection, but if you're out and about you're probably away from any network with which you're familiar. Bluetooth connectivity is also a liability in the power department. You can select the two connectivity options in Settings and switch them off easily.
Shorten Your Auto-Lock Time
Since your phone is just a screen, keeping it on as little as possible will save you a bit of juice. You can control how long your screen stays on when idle by adjusting the Auto-Lock setting. The shortest interval is 30 seconds, perfect for getting in and out of your phone. Head to Settings > Display & Brightness > Auto-Lock and choose the 30 Seconds option.
Turn off Location Services
Turning off your location services will stop your phone's GPS from stealing your juice, and stop other apps from accessing the feature when power saving is paramount. Head to Settings > Privacy > Location Services, and flick the switch.
Embrace Airplane Mode
Airplane mode. Your last resort when power is low and you're far from any outlets, or your first choice if you've already arrived at your outlet-free destination. After enabling Airplane Mode in the Settings, you can activate connections like Wi-Fi or Bluetooth if you need to connect to something while conserving power.