If you’re in a location with poor cell service, Wi-Fi calling can be incredibly helpful. It allows for calls and texts when your cellular connection isn’t available. However, some iPhone users have reported that this feature might drain their battery more quickly than expected. One user, Laura B, posed a question about this:
“Living in a rural area with no cell service, I rely on Wi-Fi and Wi-Fi calling. Is it possible that this uses more battery than cellular data?”
Laura’s observation is valid. Yes, Wi-Fi calling can indeed consume more battery than a steady cellular connection. The reasons are pretty much the same as they were in previous iOS versions, but Apple has introduced new tools to help you monitor and manage battery use. Android users will find similar issues, which we’ll touch on later.
Why Wi-Fi calling consumes more power
Wi-Fi calling is set up to keep you connected, but there are some technical reasons behind why it can drain your iPhone’s battery more quickly than anticipated.
1) Searching for mobile signals
Your iPhone might still be looking for cellular towers even when you’re not using the service, which consumes energy. Without taking steps to adjust this, it will continue to zap your battery life.
2) Continuous Wi-Fi activity
For Wi-Fi calling to function, the Wi-Fi radio must stay on, and there are background processes involved that require energy—this can ultimately use more power than simply staying connected to a strong LTE network.
3) Weak Wi-Fi signals
If your Wi-Fi signal is unstable or weak, your iPhone has to work harder to maintain a connection. This effort can cause your phone to heat up and drain the battery faster.
How to make Wi-Fi calling more efficient on iOS
Here are some practical settings that work with iOS.
1) Stop the phone from searching for signals
- Open Settings
- Select Airplane Mode
- Turn it on
- Then, return to Wi-Fi and manually turn it back on
This prevents your iPhone from wasting energy trying to find cell service that isn’t available.
2) Keep Wi-Fi calling activated
- Go to Settings
- Scroll and tap on Phone
- Select Wi-Fi Calling
- Switch on “Enable Wi-Fi calling on this iPhone“
3) Limit background activity
- Background app refresh: Go to Settings → General → Background App Refresh → set it to Wi-Fi only or turn it off for apps you don’t regularly use.
- Email fetch: In Settings → Mail → Accounts → Fetch New Data → set to manually or choose a longer interval like 30 minutes.
4) Manage screen and system usage
- Brightness: Go to Settings → Display & Brightness → reduce the brightness or enable automatic adjustments.
- Location services: Navigate to Settings → Privacy → Location Services and turn off services for apps that don’t need them.
5) Ensure a strong Wi-Fi connection
- Keep the phone close when near the router
- Consider upgrading to a Mesh Wi-Fi system if signals drop frequently within your home.
Updates in iOS 26
While Apple hasn’t altered how Wi-Fi calling operates in iOS 26, they did enhance battery usage monitoring.
- Adaptive power: This feature adjusts screen brightness, refresh rates, and background processes automatically when your battery is draining faster than normal.
- New battery analysis: With iOS 26, you can view a weekly summary of your battery usage, showing which apps consume the most power. You can find this under Settings → Battery.
These new tools won’t eliminate Wi-Fi calling’s power demands, but they can improve visibility and sometimes even help conserve battery life.
Wi-Fi calling effects on Android devices
Android users encounter similar battery drain issues as iPhone users. Continuous processes, active Wi-Fi radio, and unstable connections are common culprits. However, some settings can differ between Android devices.
Still searching for cell towers
Even with Wi-Fi calling activated, your Android might keep searching for mobile signals, which uses battery life. To fix this, enable airplane mode, then manually turn Wi-Fi back on.
Carrier-specific settings
Wi-Fi calling functions differently across carriers, potentially leading to higher energy consumption depending on the network. Make sure to check your carrier’s settings under Network & Internet.
Background apps
Unlike iOS, many Android devices can have numerous apps running in the background. If you’re using Wi-Fi calling, consider managing background activity to save battery.
Power-saving features
Many Android smartphones include adaptive battery options which can help. Remember to enable these features to limit high-consumption apps while using Wi-Fi calling.
Maintain a solid Wi-Fi signal
As with iPhones, inconsistent Wi-Fi can lead to faster battery drain. Stay close to the router or try a mesh network setup for better coverage.
Key takeaways
Wi-Fi calling is invaluable in areas with limited cellular connection, but it can deplete battery life, especially with weak signals. iOS 26 has improved tools to help manage battery usage effectively. Simple adjustments like enabling airplane mode when there’s no cellular service, limiting app activity, and strengthening your Wi-Fi can go a long way in conserving battery life.
What challenges do you face with your phone’s battery? How do you handle it? Reach out with your thoughts.
