iPhone 15 WiFi painfully slow.

xarmanno Said:

"iPhone 15 WiFi painfully slow.: Upgraded to an iPhone15 from an iPhone X (yes, really) and ever since the wifi connection is awful. Pages that loaded perfectly on the same WiFi with my iPhone X, will load very slow if at all. More often than not, I end up getting frustrated with the slowness that I just exit out of the app or site. It’s really bad and I’m not sure if this is a settings problem or if my WiFi chip might be defective??"

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Troubleshooting iPhone WiFi:

A few thoughts to try:

I. Start Here: If your iPhone, iPad, or iPod Touch won't Connect to a Wi-Fi Network - Apple Support

II. Clear the Temporary Internet Files:

• Cookies perform remembrance of certain site-entered data.
• Cache keeps a snapshot of the last time you visited a site.
• Go Here: Clear the History and Cookies from Safari on your iPhone, iPad, or iPod Touch - Apple Support

III. Restart your Router:

1. Power: off the router
2. Wait: 30 seconds
3. Power: It back on

IV. Reconnect to your Network:

1. Go to: Settings
2. Tap: Wi-Fi
3. Disable: Wi-Fi
4. Wait: 30 seconds
5. Enable: Wi-Fi

V. Add Back the Network:

1. Go to: Settings
2. Tap: Wi-Fi
3. Remove: the network
4. Wait: 30 seconds
5. Add: the network back

V. Reset All Network Settings to Default:

Example of items that will be reset: (Wi-Fi Passwords, VPN Connections, etc):

1. Go To: Settings
2. Tap: General
3. Tap: Reset
4. Tap: Reset Network Settings.
5. Enter: [Your Passcode]

It won’t let me vote right now but that 👆🏼from JMAN712 did it for me! Thank you!

Hi.

I had the same performance issue. I was using packetlosstest for diagnosis. I was loosing about 20% of traffic.

I started reviewing my router settings and I found MU-MIMO option.

When I disabled it then packetlosstest showed 0% loss.

It looks that iPhone 15 Pro Max is not compatible with MU-MIMO. I have Xiaomi Router Mi AIoT AC2350.

Regards

Rado

I’m not sure how adjusting settings for Safari would affect WiFi speeds on my phone in general but I gave you the benefit of the doubt and tried it. Maybe this helps in the Safari app itself but using chrome or running a speed test still has the same resulting slow speed

Is it possible that your router defaults to 2.4GHz not 5.0GHz? I had the same speed issue with my iPhone 15 but only at my house. Unbeknownst to me, my router flipped to 2.4GHz during a reset. Once back at 5.0GHz the problem was solved.

This is what worked for me. I have the 15pm

Disable Wi-Fi Assist: Wi-Fi Assist is a feature that automatically switches to cellular data when the WiFi signal is weak. However, this can sometimes lead to slower WiFi speeds. To disable it, go to Settings > Cellular and scroll down to find Wi-Fi Assist. Toggle it off.

Yup it happens on every router/ wifi connection, so it’s not the router/modem. Hopefully apple will update something on it. Its horrible. Bout ready to toss this piece of **** in the garbage.

Temporary fix. Issue resumed after leaving my house and returning to WiFi range.

absolutely horrendous performance. Cannot even load a song in apple music.

I'm concerned that my Amazon Echo has better streaming performance than my 1500$ iPhone.

Hello,

If it worked at your house, but not when you left it, it could be an issue with cellular data. See this:

Use cellular data on your iPhone or iPad

View or change cellular data settings on iPhone

Good luck.

I found a solution for iPhone 15 super slow wifi.

I think the iPhone's problem is preferring for some reason 2,4 GHz over 5 GHz from your home modem.

New modems have usually band steering mode. This means your appliances can choose wifi frequencies automatically from your home wifi network.

2,4 GHz has a longer range and slower speed and it is compatible with most electronics

5 GHz shorter range and higher speed and for newer electronics

If we create 2 separate wifi one for 2,4 GHz and the other for 5 GHz, and let the iPhone connect to only 5 GHz, speeds go instantly higher.

• Find your home modem and connect to the admin page in your internet browser.
• You will find the address and password at the bottom of your modem
• The address is 192.168.x.x. In my case 192.168.0.1.
• In the admin console under WiFi, enable networks 2,4 GHz and 5 GHz
• Name them differently and apply changes
• In iPhone wifi settings ignore the old wifi network, and connect only to a 5 GHz network and that is it.

Video how to do it!

Turning private relay off returned my WiFi download reading speeds to normal.

My IPHONE 15 PRO MAX WIFI is painfully slow as well, turned off Cellular to try and make it faster along with several resets. This phone is trash. I upgraded my 13 and just want it back :(

Unfortunately many will not have the option to disable this feature if they have a modern, provider-issued modem. I’m glad you found a solution.

I’m currently testing a workaround of turning off 6e capabilities after connecting to my WiFi. If anyone else would like to test this with their 6e capable router please let me know.

Now that you bought yourself an iPhone 15 set it and forget it. The next steps of this troubleshooting will help you resolve any issues you have

First find out narrow down your information turn off your cellular data when you’re at home and just use your Wi-Fi. Don’t let iPhone determine what your best signal is. Turn it off. Use it for three minutes do a Speedtest if you find yourself at a very slow speed. It should be higher than your cellular data no comparison so if it’s slow you need to go into your Wi-Fi modem and in there you’ll find different channels. Mine was channel 8 I switched it to 11 hit speed test and I was 400 MBits per second. You need to find out what channel your modem communicates with your iPhone 15 the best there are a lot of reasons for this like interference etc. but we’re not gonna get into that here.

You probably know this next drill, but I’ll spell it out anyway turn off your Wi-Fi turn on your cellular wait two minutes go outside your house and do a speed test. If this proves to be a problem you need to call your cellular provider and if they won’t help you, you need a new cellular provider, unless you live in the woods and you inherently don’t have good coverage

adhering to the rules of the community. I cannot mention my cellular provider, but I called them and they kept telling me and making me feel like it was my problem. The phone I bought where I live it was all me then I went and got another cellular provider without canceling the first one just put the new Sim card in to the new provider, and I thought my iPhone would overheat it was going so fast, so I called my original provider and canceled. And now, if you’re gonna ask my provider, can you hear me now the answer is gonna be no cause I’m no longer with them

I purchased 2 new Titanium 256 pro phones because my husband I always get new phones together and he lost his phone on the highway. Long story short…. I hate this 15 titanium. I have more than enough space on the new phone. However, searching google, pullubg up photos at google documents is an unbelievably slow. Also, when I am watching a you tube video is so slow to play and pauses and even stops. I hate this iPhone phone product. I am a iphon used with 6 devices but this Titanium is not worth the investment and not a reflection of typical apple products. Hate it and ready to change.