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Hello guys, my iPhone has been experiencing extremely slow WiFi download speed after updated to iOS 13.3, I have tried reboot the router, reset the network and other suggestions from the internet, but it still not fixed, does any one can help me to fix it? Thank you
Hey LeoAus,
Thanks for the update. Since the issue is resolved for a bit after restarting the router and since only download speed is affected, it may be a setting issue. Try forgetting the network and connecting to it again and see if the issue persists. Then try resetting the network settings and see if the issue persists.
Are there connection speed issues with other Wi-Fi networks?
"Forget a network on your iPhone, iPad, or iPod touch
next to the Wi-Fi network that you want your device to forget.How to forget a Wi-Fi network on your iPhone, iPad, iPod touch, or Mac
"Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you’ve used before."
"Update your Wi-Fi router with the latest firmware and make sure that the router supports your Apple product. For more information, contact the router's manufacturer."
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
Restore your iPhone, iPad, or iPod to factory settings
Have a good one.
Hey LeoAus,
Thanks for the update. Since the issue is resolved for a bit after restarting the router and since only download speed is affected, it may be a setting issue. Try forgetting the network and connecting to it again and see if the issue persists. Then try resetting the network settings and see if the issue persists.
Are there connection speed issues with other Wi-Fi networks?
"Forget a network on your iPhone, iPad, or iPod touch
next to the Wi-Fi network that you want your device to forget.How to forget a Wi-Fi network on your iPhone, iPad, iPod touch, or Mac
"Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you’ve used before."
"Update your Wi-Fi router with the latest firmware and make sure that the router supports your Apple product. For more information, contact the router's manufacturer."
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
Restore your iPhone, iPad, or iPod to factory settings
Have a good one.
Hi Joseph, thank you for your help, unfortunately, it still has the issue, the wifi speed is good after every time reboot the router, but after couple minutes, it becomes slow again, but the laptop speed is fine, also, it’s just download speed slow, the upload speed is normal, so I am not sure its hardware issue or the software issue
Greetings LeoAus,
Thank you for using Apple Support Communities. It seems like the Wi-Fi connection speed is slow. It looks like you have already done some troubleshooting to solve this issue. Even though there is a chance that you've tried these steps already, I would recommend you follow every step and let us know if the issue persists.
Resolve Wi-Fi and Bluetooth issues caused by wireless interference
Recommended settings for Wi-Fi routers and access points
Please don't hesitate to let us know if the steps resolved your issue or if you need additional assistance.
Take care.
I faced with same issue after installation of IOS 13.3. I tried many things including returning to the factory settings. The problem is still exists. The download speed is around 0.7Mbps.
Slow WiFi
