How do I fix my iPhone 12 Pro Max showing as"No internet connection"?

Question

Level 1

5 points

How do I fix my iPhone 12 Pro Max showing as"No internet connection"?

In the recent days, my iPhone 12 pro max displays a message on the screen "No Internet Connection" while it is connected to the WiFi and has some connectivity (very slow to launch website but it launches them after a few seconds).

iOS: 18.2

I have tried everything that I could think of:

turn on/off airplane mode
shutdown the phone and turn it back on
I tried 4 difference networks: 2 of them are 5G and 2 of them are 2.4G
I reset the Network settings and re-configured the WiFi network (Settings -> General -> Transfer or Reset iPhone -> reset network settings)
step 3, then step 2
connected to an another device hotspot
removed apps and VPNs settings
turned off cellular data and connect the WiFi -> I have connectivity, I check with speedtest and also enter a few website that I don't use so often, but still some things don't work (for example: software update: Unable to check for update. checking for a software update failed because you are not connected to the internet).

The only thing left to try is a full phone reset, but I'd rather not.

I have no idea what to do to find what is the root cause.

Any help would be appreciated.

[Re-Titled by Moderator]

iPhone 12 Pro Max, iOS 18

Posted on Dec 29, 2024 07:25 AM

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Answer 1

Jeff Donald

Level 8

41,382 points

Dec 29, 2024 07:48 AM in response to TsurT0

In addition to lobsterghost1 recommendations, you’ll want to reset your network settings after deleting VPN files, app, etc.

If your iPhone or iPad won't connect to a Wi-Fi network - Apple Support

>>Reset your network settings

If you're using iOS or iPadOS 15 or later, tap Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings.

If you're using iOS or iPadOS 14 or earlier, 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.

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Answer 2

TsurT0 Author

Level 1

5 points

Dec 29, 2024 08:27 AM in response to Jeff Donald

the list is not the sequence of steps I did.

It is a list of what I tried.

After I removed the VPN, I restarted the device.

After I reset the network settings back to default, I restarted the device.

I didn't want to describe everything I tried in details, because it would triple the size of the description of what I tried.

if we focus on the I tried first:

airplane mode
shutdown the device
remove the known WiFi networks and re-configure them
remove the VPN settings and shutdown the device
reset the network settings and shutdown the device
connect to a hotspot

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Answer 3

TsurT0 Author

Level 1

5 points

Dec 29, 2024 11:51 AM in response to TsurT0

I think I found the root cause of the issue.

Introduction: I have been owning the device for about 4 years. From very first day, I have been using the app 1.1.1.1 to route the entire device through CloudFlare's DNS server. The app achieves this by installing a VPN that controls all the traffic. I work for a company another VPN secure communication for and Teams which are used workspace applications. Until a few days ago everything was working smoothly no issues.

I removed the work VPN and deleted a bunch of apps a few days ago, as the VPN was making my device sluggish.

Since then, the issues started as I mentioned in the first post. I reinstalled the 1.1.1.1 app, but it's still not working. hence, I'm guessing that there is a compatibility issues with 1.1.1.1 app and the new iOS 18.2.

Problem solved by removing of CloudFlare DNS app.

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Answer 4

Dec 29, 2024 07:35 AM in response to TsurT0

Did you completely remove anything related to a VPN? Not just turn off the VPN, but remove the app and in Settings > General > VPN & Device Management, remove the VPN Profile?

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