WiFi Speeds (iPhone 12 Pro Max)

all my other devices worked and work just fine !

but I haven’t seen 700mb on the 12 pro max since I got it !

now I see it but, it’s not constantly.. sometimes it just drops while making a speed test ...

I think there is still something with the power consumption, power/battery management, maybe even cpu🤷🏻‍♂️

iPhone 12 Pro Max->Reset Network Settings-> Switched WiFi "off"-> 5G Data Roaming set On-> Use More Data on 5G set.

Solely connected to 5G Verizon Broadband-> 4.1mbps.

Switched to Wifi 5Ghz router bandwidth + Cellular ->> got 100mbps

This device is less than 30 days old. The camera technology is STELLAR...."but" why is the Broadband reception so poor?

& Please spare me the derogatives about Verizon.

Thank you for your post. Fast.com speed tests were abysmal. Once I put the Ookla Speedtest app on and ran on Cellular 'only', I got the attached results. Previously, 5G tests came through at less than 4mbps.

Mrsmrock wrote:

Well at least it’s not just me. We pay for 1Gb service and consistently get >700 mbps speeds across our WiFi on all devices.

Unless you have a brand new WiFi 6 router and all your other devices are WiFi 6 and within ten or so feet of the router, you are not seeing 700 Mbps speeds unless your speed test is lying to you.

For most people with 5 GHZ WiFi and Gigabit service you will in most cases see no more than 600 Mbps down over WiFi compared to 940 Mbps or so via a wired connection.

Something like this is more typical:

I am having the same problem. I tested network on my new iPhone 12 and my wife’s iPhone 7. Here is the results. I really don’t have any more ideas how to resolve this problem on 800 euros phone. This is so disappointing from Apple.

I’m experiencing the exact same issue. A speed test this morning indicated speeds so bad, it took me back to the dial-up days of 56K.

I’ve tried every single troubleshooting step that you can imagine:

-toggled airplane mode

-turned the phone off and on

-turned low data off and on

-reset network settings

-set phone up as new

-got a new router with wifi 6 capabilities (this made my fiber 1GB connection get 40mbps instead of dial up speeds as pictured.)

-tested all other devices including the 2020 iPhone SE which netted 700mbps (8 times faster than my speed.

-compared my 2020 iPad Pro 2020 and MacBook Air, along with the iPad Pro 2017 (they all received 500mbps or higher)

Everything is up to date on iOS 11.4 and on OS as well. It seems out of the many devices that I have on the network, only the iPhone 12 Pro Max has an issue.

It’s not very productive to commiserate here rather than try diagnose the issue.

If you care to, many of us would help; making sure your WiFi access point’s firmware is up to date or trying a different one is a great first step.

Millions of people are using their iPhone 12 Pro Max with WiFi with zero issues, so it's much more likely to be your wireless access point/router that has an issue.

I just checked mine and got a result basically the same as that I posted in the post right above yours.

Have you checked to make sure your router is running the most recent firmware available for it?

Well you may be right about radio speed defect falling back I do notice it faster if on router e. Half the 700mbs attached is 350mbs when on top of it. But that’s the point, iPhone 10 didn’t have this issue and our iPhone 11s work all over the house at faster speeds. Dell laptop too. His is 12 pro max defect that affects lots of people

That's likely an issue with your Wi-Fi router or your 5 GHz signal is notably noisier than the 2.4 GHz band and such a connection would actually give you lower throughput and/or there would be more retransmissions.

The other thing I can’t check myself is wether my iPhone is trying to connect to the 2.4ghz speed of my modem instead of the faster 5.0(?)ghz. That could explain the speed difference but unfortunately apple doesn’t let me see which networking it is trying to use... and if that is the case, the iPhone may be having issues connecting to the 5ghz band due to weak signal? I would love to have this tested in store but COVID is making this IMPOSSIBLE to be done before customer return policies.

I too have inconsistent WIFI throughput on my iPhone 12 Pro Max. I believe that I have traced the issue to the fact that I operate in dual SIM mode: Verizon using a real SIM; AT&T using an E-SIM. When I take out the Verizon SIM or turn off the AT&T line, WIFI throughput recovers.

I have opened a case with Apple Support.

I was having slow WiFi speeds I turned of cell data. I discovered that my iPhone was not connected to the WiFi network. Once I turned WiFi off and on again it connected. I then turned back on cell data. Working as of last speed test. The next thing you can try is removing WiFi and reconnecting to your network.

Senpapi98 wrote:

The other thing I can’t check myself is wether my iPhone is trying to connect to the 2.4ghz speed of my modem instead of the faster 5.0(?)ghz. That could explain the speed difference but unfortunately apple doesn’t let me see which networking it is trying to use... and if that is the case, the iPhone may be having issues connecting to the 5ghz band due to weak signal? I would love to have this tested in store but COVID is making this IMPOSSIBLE to be done before customer return policies.

That’s easy to fix. Go into your router’s settings and change the SSID of the 5GHz network so it will appear separately in the network listing in Settings/Wi-Fi. For example, if your SSID is XYZZY, change the 5 GHz SSID to XYZZY5. You can then test them separately.

I just got my new 12 Pro Max set up the other day. Noticed immediately that it has very slow Wifi performance while all my other devices (13" MBP 2020, MBA 2020) are exponentially faster. I discovered that my 2019 iPad Pro is also very slow. I have an older iPhone 7 Plus that has not been updated to iOS 14.2 while my 12 Pro Max and iPad have been updated. The 7 Plus has fast, expected speeds on wifi. It seems it may be related to iOS 14.2 .