WiFi Speeds (iPhone 12 Pro Max)

I am/was experiencing the same issue with my iphone 12. When you select your preferred network in wifi settings. Turn off Private address. This helped solve the issue.

I am experiencing the same issue with my new iPhone 12 Pro Max. I have an Apple Airport Extreme Time Capsule that I have been using for a couple of years without any issues. The Airport is updated to the latest firmware. I have been broadcasting a single network 2.4 GHZ /5 GHZ. The Iphone 12 Pro will only connect to the Airport network in 802.11 b/g/n mode. At the suggestion of another person on this thread, I set the Airport to broadcast a 5 Ghz only SSID. Once I connect to that SSID, the iPhone 12 works as it should. I have my old iPhone 7 Plus that connects to the original 2.4 Ghz/5 Ghz network and gets speeds at least triple of what the iphone 12 gets when connected to the same network. The iPhone 12 is running iOS 14.2.1 as of this morning and it did not fix the issue.

I believe that resetting the network settings solved the issue.

I had a downloand speed of max 140mb/s on my iphone 12 mini while on the 11 I was getting almost 400mb/s.

After I've reset the network settings now I've got 370mb/s.

It's the second time that I'd to reset network settings as I had also an issue while backing up the new iphone. Now I still have an issue that I get the notification of an overdue reminder every time I do an hard reset.

I have to say it's the first time I'm encountering all these issues with an iPhone and I'm quite disappointed.

Same here, Checked againts Iphone 12pro and Iphone 8 within same wifi network and my 12 pro max wifi speed was 1/3 of the orher devices.

I tried reseting the Network Settings on my 12 pro max and the speed improved, now it is running at almost twice the speed than before but still not catching up with the 12 pro or 8.

To perform the network reset on your iphone do the following:

1. Open Settings from the Home screen. 
2. Tap General.
3. Scroll down to and then select Reset. 
4. Tap the Reset Network Settings option.
5. Enter your device passcode..
6. Then tap to confirm network settings Reset.

Once the Reset is completed, your phone will restart automatically.

Hope it helps

One thing that helped me was 1. Ensure that the personal hotspot is OFF 2. Change DNS on the wifi network you are connected to, i use the goodle DNS 8.8.8.8 removed the others. You do this by pressing the little i icon next to the wifi then edit the dns.

Today I am noticing this iPhone 12 Pro Max WiFi issue may be related to Bluetooth. With Bluetooth connections to Apple Watch and Bluetooth headphones turned off my WiFi speeds increased to normal. When bluetooth turned on with Apple Watch WiFi speed dropped about 30% and then when adding on bluetooth headphones (Jabra) my WiFi speed dropped to almost nothing.

Seems like an issue for some kind of firmware update. For now I will just turn off bluetooth when using WiFi and see how consistent that is keeping the 12 Pro Max WiFi speeds up to normal. ThankYou, iSi

Actually after my post I checked what network I was connecting to and it was the 2.4 GHz side of my router, when I switched to the 5 GHz side and did a speed test I reached over 350 gbps, that’s 50 over my current subscribed service speed...

No there is definitely something wrong with the modem firmware. Turning off Bluetooth will improve wifi speeds but when turning on Bluetooth will degrade my wifi speeds. I’ve changed routers, reset network settings, have 1gbps connection, and never use the 2.4ghz signal for my devices. I use only 5ghz with MIMO and 1024QAM.

MAPE15 wrote:

well 2.4 is limited I think maximum 450mbps thoretical right?

Well, theoretical is just that, and throughput will generally be half of the maximum under the best of circumstances. 2.4 GHz is doing very well if you can get 50 mbps, 25-35 is more likely. Your 2.4 GHz network will run at the speed of the slowest device connected to it, so if you have any IoT devices connected such as doorbells, cameras, music players, etc your iPhone will run at their speed. If you want to test this Turn off all other devices so your phone is the only one connected, then restart your router. If the phone is the only device on the network you should get much faster speeds at 2.4 GHz. But why bother? Just use a 5 GHz connection. 2.4 GHz is crowded (there are only 11 channels) and has narrower bandwidth. 5GHz has a theoretical maximum of 6-9 gbps (although there are currently no devices that support beyond 1 gbps).

OTOH, 25 mbps is fast enough for almost anything you can do with an iPhone. There just aren’t many functions or apps that can take advantage of faster speeds.

I reported this issue a few months back. In my case my iPhone 12 Pro was approximately 100 Mbps slower than my previous iPhone 10s via WiFi. I purchased an 8th Gen iPad shortly after and set it up using my 12 Pro and noticed the same issue on that. I still have an iPad Gen 5 that didn't have this problem on the same WiFi network.

A few weeks ago I moved to a new router. It's the same brand as the old one but, is an updated model. My WiFi speeds have returned across all devices. I am uncertain what the issue could have been but, clearly it's not the iPhone. Perhaps some sort of interaction during set up?

Anyway, I wanted to share this as a follow up. Best of luck to all that continue to experience this issue.

I am/was experiencing the same issue with my iphone 12. When you select your preferred network in wifi settings. Turn off Private address. This helped solve the issue.

I was on Wi-Fi and 5G/lte. Verizon’s digital secure VPN was the culprit. Soon as I disabled it, internet speeds instantly improved

Upgrade to 14.3 and go to your wife. Remove private address and it will work. Apple recently added this option for an additional private WiFi address but not necessary if your on your home WiFi.

To: MAPE15

I agree with you. I have same issue with only using 2.4GHz WiFi.

Bluetooth off: 75Mbps+

Bluetooth On (Apple Watch): 2Mbps

Bluetooth On Proxy Set to Auto: 35Mbps

Thanks for the link mate!

Turning off "Private Address" for my own wifi helps!, My netflix doesn't buffer now,. Cheers!