Android · System
Carrier-specific firmware and profile updates
Carrier software updates deliver network-specific fixes — like updated cellular radio firmware, VoLTE/Wi-Fi calling profiles, or APN settings — separately from the general Android operating-system update process.
How to open Carrier Software Updates
- Open Settings > About phone.
- Look for 'Carrier updates' or a similarly named option (varies by manufacturer).
- Tap to manually check for an available update.
- Restart the phone if a new SIM was recently inserted and features seem missing.
What you should know
- Often found under Settings > About phone > Carrier updates, or triggered automatically after inserting a new SIM.
- These updates typically don't change the Android version or add new features.
- Carrier updates can fix issues like dropped calls, missing VoLTE, or incorrect data/APN behavior specific to a network.
- Some carrier profile updates install silently in the background without a visible prompt.
The exact menu location and name for carrier updates vary significantly by manufacturer and carrier, and some devices don't expose a manual check at all.
Why it matters
Without an up-to-date carrier profile, features like Wi-Fi calling, VoLTE HD voice, or visual voicemail can silently stop working even though the phone's core Android software is current.
Best practices
- Check for a manual 'Carrier updates' option after switching SIM cards or carriers.
- Restart the phone after inserting a new SIM to help trigger an automatic profile check.
- If call quality or Wi-Fi calling issues appear after a carrier switch, look here before assuming it's a hardware problem.
Common problems and fixes
- Wi-Fi calling or VoLTE isn't available after switching to a new carrier.
- Check for a carrier settings update in About phone, restart the device, and confirm the SIM/eSIM is fully activated with the new carrier.
- No 'Carrier update' option appears in Settings at all.
- Not every manufacturer exposes a manual check; carrier profile updates on those devices install automatically and can't be triggered by the user directly.
Tips and tricks
- If a specific carrier feature (like Wi-Fi calling) is missing after a SIM swap, toggling Airplane mode on and off can prompt the phone to re-check for a carrier profile.
Frequently asked questions
Is a carrier update the same as a system update?
No, system updates come from Google/the manufacturer and change Android itself, while carrier updates come from the network operator and adjust network-specific settings.
Do I need to do anything after switching SIM cards?
Usually not — most phones automatically fetch the new carrier's profile, though a restart can help if features like Wi-Fi calling don't appear right away.
Related settings
- System UpdateSystem Update keeps Android current with the latest security patches and features. Google and your device manufacturer regularly release updates that improve performance and close security gaps.
- Google Play System UpdateGoogle Play system update (Project Mainline) delivers security and consistency fixes to core Android components through the Play Store itself, letting Google patch critical system modules on a monthly cadence without waiting for a full manufacturer OS update.
- Hotspot & TetheringHotspot and tethering let you share your phone's mobile data connection with other devices over Wi-Fi, Bluetooth, or a USB cable. This is useful for getting a laptop online while traveling, or letting a friend's device briefly borrow your connection.
More System guides for Android
- BatteryBattery settings show a breakdown of what's draining your charge, offer a Battery Saver mode to stretch remaining power, and let you restrict background activity for specific apps. A built-in health estimate also indicates how much capacity your battery has lost over time.
- Security Patch LevelThe security patch level shows the exact month a device's known vulnerability fixes were last updated — a separate, more frequent indicator than the overall Android version number.
- Auto-update Apps SettingConfigures whether apps installed from the Play Store update automatically, and under what network conditions, so new versions install without manual action.
- App Download Network PreferenceDetermines whether the Play Store is allowed to download large app installations and updates over mobile data, Wi-Fi only, or asks each time for files above a certain size.
- Manual Check for System UpdateLets you trigger an immediate check with Google or your carrier's update servers to see if a new Android OS version or patch is available, rather than waiting for an automatic notification.
- Scheduled System Update InstallsLets a downloaded system update install automatically overnight or at a chosen time instead of immediately, so the required restart doesn't interrupt active use of the phone.