Users of Mac OS X Mavericks and earlier have reported facing WiFi related issues after their MacBook Pro comes out of sleep. In most cases, the WiFi-related issues have occurred after installing OS X Mavericks on a MacBook Pro. In later macOS versions, this problem has been resolved. Having steady Internet connectivity is crucial to complete both work tasks and routine operations. No need to worry: the majority of sleep-related WiFi issues on MacBook Pro machines are easy to fix.
How to Fix WiFi on MacBook?
Here’s what to do if your MacBook Air/Pro wireless connection is slow or WiFi won’t connect after being in the standby or sleep mode:
- Modify Bluetooth settings
WiFi and Bluetooth connections might interfere with each other. If you’re not much of a Bluetooth user, disabling it can help. In the Apple Menu, go to System Preferences –> Bluetooth –> Disable Bluetooth. In most cases, switching the Bluetooth connection off will be the end of WiFi issues. What to do if you need to keep the Bluetooth enabled? If that’s the case, you’ll need to modify specific system settings:
- Access System Preferences –> Network –> in the bottom-left corner, find a gear icon and click on it.
- Next, select Set Service Order -> drag Bluetooth to put it under the WiFi connection indication.
- Click OK to confirm, then reboot your MacBook Air/Pro.
This way, the CPU will set a higher priority to the WiFi connection to launch it before Bluetooth.
- Reset System Management Controller (SMC)
Resetting the system management controller can resolve the WiFi related issues.
Note: the SMC reset won’t influence your user data.
For MacBook Pro models manufactured in 2009 and later (with non-removable batteries):
- Turn off your MacBook Pro.
- Plug the MagSafe connector into a power source and MacBook Pro on both sides.
- Hold down Shift-Ctrl-Option-Power key combination at once.
- Release the keys, then press the Power button to boot your MacBook Pro as usual.
For MacBook Pro models with removable batteries:
- Turn off your MacBook Pro.
- Unplug the MagSafe connector, then pull out the battery.
- Press and hold down the Power button for 5 sec.
- Release the Power button, insert the battery and plug the MagSafe connector back in.
- Turn on your MacBook as usual.
To learn more about the SMC reset on Mac computers, address the Apple Support knowledge base.
- Zap the NVRAM (PRAM)
Earlier Mac models used PRAM (parameter random access memory), a limited amount of battery-backed memory storing the data needed to load the operating system. Later on, it has been replaced by NVRAM (non-volatile random access memory), a limited amount of memory used to keep system settings like display resolution, sound volume, startup disk information, time zone, etc. Resetting NVRAM might help to fix the settings related issues.
- Turn off your MacBook.
- Turn it on while holding down Cmd-Option-P-R keys at once. Keep pressing the keys down for the next 20 seconds while your Mac restarts.
- Release the key combination to let your MacBook load as usual after the NVRAM (PRAM) reset.
Note: the NVRAM (PRAM) won’t impact user data. However, specific system preferences might change.
- Remove the Bluetooth .plist file
Deleting the Bluetooth .plist file is an emergency option in case modifying the Bluetooth settings didn’t resolve the WiFi connectivity problems.
- Go to ~/Library/Preferences/ –> locate and remove the file named com.apple.Bluetooth.plist;
- Go to ~/Library/Caches/ and erase all cache files;
- Restart your MacBook to check if the WiFi connectivity problems resolved.
What to Do If You Can’t Fix MacBook WiFi Problems?
The above methods should help in fixing your Apple MacBook Air/Pro wireless connection issues. If none of the fixes helps, try contacting your internet service provider to check if the WiFi router settings are correct. Believe it or not, the solution may be quite obvious:
- Check if the Wi-Fi (AirPort) card is enabled: in some cases, it might turn off by accident.
- If the WiFi indication is missing from the menu bar, go to the Apple menu -> System Preferences -> click the Network icon -> select WiFi.
- See if your Mac joins the correct wireless network. If it does, check if you have provided the correct password.
- To verify your TCP/IP settings, go to the System Preferences -> Network pane.
- In case your WiFi connection is slow, check if a given router supports the 802.11 protocol.
If none of the above solutions help you resolve the WiFi related issues, address Apple Care for help. Even if your MacBook Pro has factory flaws, you will be able to return or exchange the device. Which of the fixes helped in your case? Share all the effective solutions to WiFi issues.