If your iPhone SE keeps losing signal, showing “No Service,” or struggling with dropped calls, you’re not alone. These signal issues can stem from anything like network outages to SIM problems, misconfigured settings, or even software bugs. This guide will walk you through the most effective ways to troubleshoot and fix the problem.
Check for Service Outages First
Before diving into fixes, check with your carrier to confirm there’s no service outage in your area. You can usually do this by visiting their website, checking their app, or contacting support. If it’s an outage, there’s nothing to do but wait it out.
Make Sure Your Account Is in Good Standing
If your carrier has suspended your service due to billing issues, your phone won’t get a signal. Log in to your account online or call your provider to confirm your account is active and all bills are paid.
Toggle Airplane Mode On and Off
This refreshes your iPhone’s connection to the cellular network.
- Go to Settings.
- Turn Airplane Mode on.
- Wait 10 seconds, then turn it off again.
- See if your signal returns.
Reboot Your iPhone SE
A simple restart can resolve minor software hiccups.
- Press and hold the Power (Side) button until you see the slider.
- Drag the slider to turn off your phone.
- Wait 30 seconds, then turn it back on.
Or force restart:
- Press and hold the Power and Home buttons together until you see the Apple logo.
Reset Network Settings
This clears out all saved Wi-Fi passwords, VPN settings, and cellular configurations—helpful if bad settings are causing the problem.
- Open Settings.
- Tap General.
- Tap Transfer or Reset iPhone > Reset.
- Choose Reset Network Settings.
- Enter your passcode and confirm.
Check Cellular Settings
- Go to Settings > Cellular.
- Make sure Cellular Data is turned on.
- Tap Cellular Data Options.
- If you’re traveling abroad, enable Data Roaming.
Remove and Reinsert the SIM Card
A loose or damaged SIM can cause “No Service” errors.
- Turn off your iPhone.
- Use a SIM eject tool or paperclip to pop out the SIM tray.
- Remove and inspect the SIM card.
- If it looks damaged, contact your carrier for a replacement.
- Reinsert it carefully and power your phone back on.
Update Your iPhone’s Software
Bugs in iOS can sometimes mess with network functions. To update:
- Go to Settings > General > Software Update.
- Download and install any available updates.
Or use iTunes (or Finder on macOS Catalina and later):
- Connect your iPhone to your computer.
- Open iTunes/Finder and select your device.
- Click Check for Update and follow the prompts.
Restore iPhone via iTunes or Finder (if needed)
If the issue started after a recent update or software change, restoring your iPhone may help.
⚠️ This erases your device. Make sure to back up first.
- Connect your iPhone to your computer.
- Open iTunes or Finder.
- Select your iPhone and choose Restore iPhone.
- Follow the prompts to restore from a backup or set up as new.
Still No Signal? Time to Check for Hardware Issues
If none of the above steps work—and especially if your iPhone SE was recently dropped or exposed to water—hardware damage could be the culprit. Visit an Apple Store or authorized service center for a closer inspection.