iPhone 17 Pro Max extremely slow Wi-Fi and unstable.

We have 3 16 Pro Max iPhones in the house, so I have something to compare to. All connect to the Wi-Fi under 6 GHz with expected speed. Connecting my new 17 Pro Max to the same Wi-Fi router, Internet speed is unacceptable. Extremely slow cuts in and out have done everything possible, including a fresh install resetting everything with the same results. I believe that Apple‘s new M1 chip has an issue. Hope it’s not hardware-related. I was on the phone yesterday to an advanced senior tech that agreed the speed was not acceptable. It seems that I cannot connect to 6 GHz no matter what.  Anybody else? 


[Re-Titled by Moderator]

iPhone 17 Pro Max, iOS 26

Posted on Sep 30, 2025 5:47 AM

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Posted on Oct 3, 2025 2:56 PM

I turned off the iCloud privare relay and my wifi is way more reliable and faster than before. downside is now everyone can see what I do on the internet.


32 replies

Nov 4, 2025 3:19 PM in response to Lady Engineer

My Wife and I upgraded from iPhone 15 pro’s and never had an issue. With the new iPhone 17 pro’s we have unreliable speeds and constant drop outs.


I have spent hours with our isp trying to sort this out, but we believe it is a device hardware issue.


It is unbelievably frustrating. Hoping Apple are looking into a solution or device swap program to sort this.

Nov 11, 2025 8:47 AM in response to Lady Engineer

I just upgraded my Iphone from 15 Pro to 17 Pro this past week. My iphone 17P is upgraded to the latest software update 26.1 and i have noticed a significant difference in internet speed when i am on wifi anywhere home work wherever, it is almost unusable and i cannot sometimes even connect to the speed test on my Chrome browser. I even noticed when setting up my iphone that it wouldn't even connect to my wifi router which is brand new and very fast. I reset everything and I am still facing this issue. If my brand new iphone 17 pro can barely function on wifi anywhere i want to downgrade this is unacceptable for a $1200 phone!

Nov 20, 2025 4:15 PM in response to Lady Engineer

Same issue and no, private relay is not active. I have my 16 pro and my 17 pro max sitting right next to each other on the same Wi-Fi network and run the speed test at the same time. iPhone 17 Pro Max is consistently 4 times slower. Here is the very best result from the 17 Pro Max that I was able to achieve within a few minutes of the average test on the 16 Pro. This is right after restarting the device

Dec 5, 2025 7:44 AM in response to Lady Engineer

My 3rd iPhone 17pro arrives Monday. I really think this is a hardware problem so this is my last attempt before I reject the phone. I’m running on latest software updated this week, have no VPN and have reset countless times. Speed immediately speeds up to acceptable levels circa 300mb in my case and within a few hours is down to 10-12 mb. I’m disappointed Apple won’t admit they have a major issue as this is wasting a lot of time. It’s a business phone and I’m constantly being cut off when WiFi calling.

iPhone 17 Pro Max extremely slow Wi-Fi and unstable.

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