Fix CarPlay, Android Auto and trackers before replacing them

If Android Auto, Apple CarPlay, AirTag, SmartTag or your smart home devices keep disconnecting, do not replace them yet. Most problems are caused by a bad cable, battery saving, old pairings, Bluetooth or Wi-Fi settings, or a router that did not recover properly after a power cut.

Start with the free checks first. If the fault follows the same phone, cable or Wi-Fi network everywhere, then it makes sense to think about replacement.

Do these free checks before you buy anything

These quick tests solve a lot of connection problems across cars, trackers and smart home devices. Do them in order so you only change one thing at a time.

1. Restart your phone.
2. Restart the car infotainment system, tracker, hub or smart speaker if it has a restart option.
3. Turn Bluetooth off, wait 10 seconds, then turn it back on.
4. Turn Wi-Fi off and on again if the device uses Wi-Fi, especially wireless CarPlay, wireless Android Auto and smart home gear.
5. Install pending updates for your phone and the app that controls the device.
6. Delete the old pairing or saved device and set it up again from scratch.

If you are troubleshooting after load shedding, restart the router first and let it settle before you touch the smart device. A lot of dropouts start there.

Fix Android Auto by checking the cable, battery settings and saved car profile

Android Auto usually fails for one of three reasons: the cable cannot carry data properly, your phone is restricting the app in the background, or the car is hanging onto an old phone profile.

Try another cable and USB port first

If your car uses wired Android Auto, swap the cable before you do anything else. A cable can still charge your phone but fail for data. If the car has more than one USB port, test each one because some are charge-only.

Turn off battery restrictions while you test

On Samsung, go to Settings > Apps > Android Auto > Battery and choose Unrestricted. Then check Settings > Battery and turn off Power saving for the test.

On Xiaomi and other Android phones, look for battery optimisation settings for Android Auto, Google Play services and Bluetooth. If your phone has a battery manager app, make sure it is not putting Android Auto to sleep.

Remove the old car pairing and add it again

1. On your phone, open Android Auto settings and remove the car.
2. In the car infotainment menu, delete the saved phone and Android Auto profile.
3. Restart both the phone and the car system.
4. Pair again using Bluetooth first, then connect the cable or approve wireless setup.

Check mobile signal only if apps are slow, not if pairing fails

If Android Auto opens but maps, music or live traffic keep cutting out, the problem may be mobile coverage rather than the car connection. Test the same apps outside the car first. If signal is weak on your route, our guide on fixing weak signal in South Africa can help.

Fix Apple CarPlay by resetting the car connection and checking for interference

CarPlay problems are often the same as Android Auto problems: bad cables, weak ports, old pairings or wireless interference. If it connects and then drops after a few minutes, start there before blaming the iPhone.

For wired CarPlay, inspect the port and try another cable

Lint in the iPhone charging port can cause random disconnects. If you can see dirt, clean it carefully, then test another cable and another USB port in the car if one is available.

For wireless CarPlay, reset Bluetooth and Wi-Fi together

Wireless CarPlay uses both Bluetooth and Wi-Fi. On your iPhone, turn both off, wait 10 seconds, then turn them back on. Then go to Settings > General > CarPlay, tap your car, and forget it before pairing again.

Temporarily disable Screen Time restrictions and VPN apps

If CarPlay disconnects when you open certain apps, check whether Screen Time restrictions are blocking them. Also switch off any VPN app while testing. A VPN can make app traffic unstable and look like a CarPlay fault.

If you are already planning an upgrade, compare the cost carefully before signing a contract in frustration. You can check the iPhone 17e specs and prices page first, but only upgrade after you have ruled out the cable and the car.

Fix AirTag and SmartTag problems by checking Bluetooth, location and battery

Most tracker problems are not hardware failure. They are usually caused by Bluetooth being off, location permissions, background app limits or a flat battery.

AirTag checks on iPhone

• Make sure Bluetooth is on.
• Check that Location Services are enabled.
• Open Find My and confirm the AirTag still appears under Items.
• If location looks old, move to a busier area and wait. AirTag depends on nearby Apple devices when it is far from you.

If the AirTag is with you but nearby finding will not start, do the basic checks first. Removing and re-adding it takes longer and will not help if Bluetooth is the real issue.

Galaxy SmartTag checks on Samsung phones

• Turn on Bluetooth and Location.
• Open SmartThings and check that the tag is still linked to your Samsung account.
• Make sure SmartThings can run in the background.
• Turn off battery saving while you test.

Samsung phones can be aggressive about sleeping apps. If SmartTag updates are late, keep SmartThings out of deep sleep.

When a battery replacement is the sensible next step

If the tracker used to work normally and now drops out often even after re-pairing, the battery is the next cheap thing to try. Do that before you replace the tracker itself.

Fix smart home devices by focusing on Wi-Fi and power recovery

Smart plugs, bulbs, cameras and speakers usually go offline because of Wi-Fi, not because the gadget is dead. In South Africa, this often happens after load shedding, inverter changeover or a router reboot.

Check whether the device needs 2.4GHz Wi-Fi

Many budget smart home devices only support 2.4GHz. If the setup app cannot find the device, check whether your router splits 2.4GHz and 5GHz into separate network names. If it does, connect your phone to the 2.4GHz network during setup.

Restart devices in the right order after load shedding

Start with the router. Wait a few minutes until it is fully back online, then restart the smart plug, bulb, camera or speaker. If you reset the smart device too early, you can create a second problem.

Test the device closer to the router

If a garage plug or outdoor camera keeps dropping, move it closer to the router if you can. If it becomes stable, the issue is coverage. In that case, work on your home Wi-Fi before you replace the gadget.

Know when the phone is the problem and when an upgrade makes sense

If Android Auto, Bluetooth earbuds, trackers and smart home apps all disconnect on the same phone, the phone may be the weak link. Reset network settings, update the operating system and test again for a day before you spend money.

If the phone is old or unstable across many devices, compare affordable options instead of jumping straight to a premium contract. The Xiaomi Redmi Note 15 specs and prices page and our guide to the best phones under R10,000 in South Africa are useful starting points.

Worked example: replacing the phone is often the expensive mistake

Example: Your old Android phone drops Android Auto twice a week on the drive from Pretoria East to Centurion. A new Xiaomi Redmi Note 15 starts at R4,999, or R349/month on Vodacom over 36 months with 1GB data. But if the real fault is a worn cable or battery optimisation setting, that spend fixes nothing.

The same applies on iPhone. An iPhone 17e starts at R16,499, and there is a Vodacom deal from R699/month over 36 months with 1GB data. That is a costly way to solve a flaky USB port in the car.

Use this checklist to decide if you should replace anything

If you do need a new phone, compare prepaid prices and contracts carefully. Our latest phone contract deals page can help you check current offers.

Frequently asked questions