iPhone XS Max Me too - WiFi DL speed very slow on XS Max

donawalt

macrumors 6502
Original poster
Sep 10, 2015
461
199
(On XS Max) I know another user reported issues with download speeds using the XS Max on WiFi, I have the same issue I think. When I read his post, I tested mine and I was getting 80 Mbps d/l right next to an iPad getting 505 Mbps and an iPhone 8 getting 480 Mbps. So as he suggested, I rebooted - and I got 470 Mbps, so I wasn't worried - still probably doing stuff.

But I noticed this afternoon a picture has been stuck uploading to iCloud for over an hour, in Photos - so on a hunch I tested again, and back to 80 Mbps. When I powered off/on, brought up Photos, the photo had uploaded. But, in Speedtest it is only getting 87 Mbps. I forgot the connection and restarted, and I got 570 Mbps. But then, two more times, with the iPhone not obviously doing anything, it was back down to 80 Mbps. Other times, it is 480 Mbps - 570 Mbps.

I checked, and it is on a 2.4 GHz connection again. I think it slips from 5 to 2.4 periodically, I guess this is a bug?
 

imlynxy

macrumors 65816
Mar 8, 2012
1,241
429
You need to have a different SSID name for 2.4GHz and 5GHZ. Otherwise, the phone will default to 2.4 most of the time, because it can’t see the 5GHZ.
Depends on the router nowadays. The best router BTW is still Asus RT-AC86U woth both Asus and Merlin firmware has 2.4-5 GHz coexistence. You can change RRSI Wifi level or connection speed when router trigger switch from one band the other. You can also change time period of switch, etc.

I had bad experience with iPhone and Netgear X6. It “stood” longer on 5 Ghz than needed.

Back to the topic : I have defective XS with squeaky body and very poor LTE, but WiFi is faster than my old X has. I was amazed with WiFi quality of the phone.

If I were you, I tty the phone with a different router, if it diesnt work swap it.
 

donawalt

macrumors 6502
Original poster
Sep 10, 2015
461
199
Forgot my network, reconnected and my speed doubled. Will see if it lasts. iPhone XS Max.
I reset network settings, and restarted the network. It came up connected to 5 GHz, but after a minute or two it was back on 2.4 GHz. An iPad, and 2 older iPhones in the house are solid 5 GHz, so it's not that the router doesn't support it.
 
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imlynxy

macrumors 65816
Mar 8, 2012
1,241
429
I reset network settings, and restarted the network. It came up connected to 5 GHz, but after a minute or two it was back on 2.4 GHz. An iPad, and 2 older iPhones in the house are solid 5 GHz, so it's not that the router doesn't support it.
I think - this is you iPhone wifi module. I tried mine and it is 35 feet away fro m the router and it is on 5 GHz
 

Sugadaddy

macrumors regular
Aug 28, 2010
221
144
I posted a thread about this too. It seems the phone doesn’t stay on the 5Ghz band, even if you’re close to the router. I think they’ll fix this in an update.

In the meantime, if you want faster WiFi, configure your router to have different SSIDs for the 2.4 and 5Ghz bands. Forget the 2.4 and just connect it to the 5.
 
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FloridaGary

macrumors regular
Oct 18, 2014
215
64
(On XS Max) I know another user reported issues with download speeds using the XS Max on WiFi, I have the same issue I think. When I read his post, I tested mine and I was getting 80 Mbps d/l right next to an iPad getting 505 Mbps and an iPhone 8 getting 480 Mbps. So as he suggested, I rebooted - and I got 470 Mbps, so I wasn't worried - still probably doing stuff.

But I noticed this afternoon a picture has been stuck uploading to iCloud for over an hour, in Photos - so on a hunch I tested again, and back to 80 Mbps. When I powered off/on, brought up Photos, the photo had uploaded. But, in Speedtest it is only getting 87 Mbps. I forgot the connection and restarted, and I got 570 Mbps. But then, two more times, with the iPhone not obviously doing anything, it was back down to 80 Mbps. Other times, it is 480 Mbps - 570 Mbps.

I checked, and it is on a 2.4 GHz connection again. I think it slips from 5 to 2.4 periodically, I guess this is a bug?
This happened on my 7 also. The fix is to connect to the 2.4 and then select “forget this network”. It will now stay on the 5ghz network.
 

netnothing

macrumors 68040
Mar 13, 2007
3,674
305
NH
This happened on my 7 also. The fix is to connect to the 2.4 and then select “forget this network”. It will now stay on the 5ghz network.
This would only work if you had separate networks for each band. Most people don’t. I’m having the same issue as the OP with it favoring the 2.4 band even after connecting to the 5.
 

Fredo C

macrumors member
Mar 18, 2012
92
43
My 8 Plus is consistently beating the Max in wifi speeds in my house. Erasing network settings has narrowed it a little but the 8 Plus is still ahead by a lot.

This combined with the piss yellow screen has diminished all enthusiasm I had for the Max.
 

playtillyadrop

macrumors member
Mar 20, 2011
82
9
I’m having the same problems. On my x it will hold the 5ghz connection compared to the XS max which likes to hold on to the 2.4ghz connection. I’m using google WIFI. All my nodes are connected wired. I know it’s not my wifi and it’s related to the xs max. It seems as if it prefers the stronger signal over throughput. My x performs better. I can check through the google wifi app and it takes forever for the xs max to pick the 5ghz connection.
 

netnothing

macrumors 68040
Mar 13, 2007
3,674
305
NH
My 8 Plus is consistently beating the Max in wifi speeds in my house. Erasing network settings has narrowed it a little but the 8 Plus is still ahead by a lot.

This combined with the piss yellow screen has diminished all enthusiasm I had for the Max.
I have an Airport network and I see our iPhone 6s and iPad mini connecting at a much higher rate (700 MB/s and higher) compared to my XSM that when it connects to the 5 band is more in the 400-500 MB/s range.
 

cmaier

Suspended
Jul 25, 2007
18,029
16,031
California
Definitely seeing it lock to 2.4 when given the chance. I’m sure they will fix it in a software update soon.
 

donawalt

macrumors 6502
Original poster
Sep 10, 2015
461
199
There may be an issue and an update coming, but for me it might be fixed - I didn't just do a reset through the menu of my access points, I powered the one closest to my desk off and on last night late. My XS Max then stayed on the 5 GHz all night, and still is on it, even walking through the house to all 3 floors! I have run 3 speed tests this morning, and it's getting 540/41 and it has not been kicked to the 2.4 GHz band. So fingers crossed this stay that way!
 
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netnothing

macrumors 68040
Mar 13, 2007
3,674
305
NH
Are you using a mesh network?
No. Two Airport Extremes with an Ethernet backhaul. One on first floor, one on second floor. Been setup and working fine for years, and still working fine with other devices.

I hard rebooted my phone downstairs last night. Saw it connected to the router down stairs on the 5 GHz band. Speeds were good. Sat there for a while and eventually it stayed on the downstairs router but switch over to the 2.4 GHz band. Didn’t do anything to the phone and just came upstairs at bedtime. Phone connected to upstairs router on the 2.4 GHz band. Use the phone for a little while while browsing these forms then locked the screen and started using my iPad. Picked up my phone after about 10 minutes and it had found its way back to the 5 GHz band on the upstairs router. Went to bed woke up this morning phone still on the 5 GHz band on the upstairs router.

I still have yet to see the XSM connect above 586 MB/s via the Airport utility. My iPad mini connects around 866 MB/s and stays there.
 

BasicGreatGuy

macrumors G5
Sep 21, 2012
13,239
12,680
In the middle of several books.
No. Two Airport Extremes with an Ethernet backhaul. One on first floor, one on second floor. Been setup and working fine for years, and still working fine with other devices.

I hard rebooted my phone downstairs last night. Saw it connected to the router down stairs on the 5 GHz band. Speeds were good. Sat there for a while and eventually it stayed on the downstairs router but switch over to the 2.4 GHz band. Didn’t do anything to the phone and just came upstairs at bedtime. Phone connected to upstairs router on the 2.4 GHz band. Use the phone for a little while while browsing these forms then locked the screen and started using my iPad. Picked up my phone after about 10 minutes and it had found its way back to the 5 GHz band on the upstairs router. Went to bed woke up this morning phone still on the 5 GHz band on the upstairs router.

I still have yet to see the XSM connect above 586 MB/s via the Airport utility. My iPad mini connects around 866 MB/s and stays there.
About a month or so ago, there was a Airport Utility update. Don't remember the focus but, did you install? May not be related at all but, just trying to think of possibilities.
 

netnothing

macrumors 68040
Mar 13, 2007
3,674
305
NH
About a month or so ago, there was a Airport Utility update. Don't remember the focus but, did you install? May not be related at all but, just trying to think of possibilities.
Yes that’s installed. I tend to not think it’s related to any particular Wi-Fi set up as there are people on these forms reporting issue that don’t just have Airport routers. But who knows right?

If ALL my other devices weren’t working perfectly I think it was my own network. But every other device in the house including my old iPhone 8 plus is working as it has been all along connecting to the 5 GHz network and staying there.
 
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