iPad won't back up due to poor network conditions

My wife’s iPad is having the same issue. 

I’m having same issue with iPad Pro. Last backup July 9.  iPhone backs up fine.  Both on iOS 16.6

@wzeallor Thanks for bringing this to our attention. I'm sorry to hear you guys are having issues with backing up your iPad. I am happy to troubleshoot your network connection with you. Have you already performed any steps? 

So far I’ve tried every repair fix found on Apple and Xfinity.
The only way I can back up her iPad is directly to my laptop

This is an on going issue that I even brought up on Reddit. You can see Apple forum too. https://discussions.apple.com/thread/254938965?page=9

Xfinity,

You can see on the Apple Community forum and Reddit that all Apple users are experiencing the same problem with backing up their data and downloading iOS updates when using the XB8. My iPhone and iPad connects to the WiFi and can use the internet/stream but it will NOT download updates or back up. It will do this just fine on my job’s wifi. We’ve restarted the XB8 router, reset network connections, contacted Xfinity and Apple, etc. All Apple users are having the same problem. When is this issue going to be taken seriously and a permanent solution created?

Thank you

Same issue. xB8 worked fine for 7+ months. Early July family could no longer access Apple updates or make nightly iCloud backups over wifi, only wired ethernet will work. HomeKit Secure Video no longer works when connected to the xB8 as well. All devices work fine on other networks, or if I put the xB8 in bridge mode and use a different (eero) device for my wifi.

As said above, plenty of information can be found on https://discussions.apple.com/thread/254938965?answerId=259334973022&login=true&page=1

Just for the record, we're having the same issue on my wife's iPhone 11. It's been very frustrating and wasted a bunch of my time but here's some additional data that may help:

She was on iOS 16.5 when she experienced the problem. She had not backed up successfully since mid-June. In the course of troubleshooting on July 30 with Apple we updated her iPhone to 16.6. Apple tried a whole bunch of things… futzing with network connection settings, etc. The problem remained.

I have not experienced the same problem with my identical iPhone 11 which is running iOS 16.5 on the same network and hardware etc.

I just updated my iPhone to 16.6 and am now encountering the problem.

Update to this post 4 hours later:

I just tested my iPhone at another location at 8:54am today. It worked. The other location was also Comcast.

I have been having this issue since early July, the date of my last backup, with my iPhone 12, iPad9 and iPad10. It coincided with Xfinity's system update in my area. I have an XB8, which had been working fine prior to then. My workaround is to update via ethernet, and I downloaded the latest software update via ethernet as well. Xfinity, this is your problem to resolve. All the rebooting in the world isn't going to fix it.

Fellow sufferers, my phone sometimes backs up on its own when plugged in. I think it's using cellular data. Make sure that "Back up Over Cellular" switch is toggled on in Settings.

My wife’s iPad still won’t back up, but I haven’t had any issues with any of our other devices doing a cloud back up.

You guys are likely having other issues with your internet connection.  Different hardware might bring out a splitter/cable/connector/amp (if you have one) problem a bit more that you've always had.

For an iPhone/iPad backup to work, it's an all in one go, that connection to the cloud server has to be stable, and you can't break an active state connection while it's going on.  It's not fault tolerant. The backup also doesn't restart and pickup where it left off either, so you have to keep restarting it if it fails.  I'd start here with debugging that:  https://forums.xfinity.com/conversations/your-home-network/internet-troubleshooting-tips/602dae4ac5375f08cde52ea0

​You'll have better luck with making a local backup.  Also, for what it's worth, cloud backup is a bad idea from a security perspective, and storage is cheap these days.  Make a local backup, encrypt it, then make a copy and put it off site somewhere.  It's always desirable to keep your one's and zero's to yourself and have physical control over them.  

It's not just backups, it's also updates as well as a few other  services. It's also not a matter of failing, those of us with the issues are not able to even start backups, and updates are grayed out. With multiple iThings in our house, some have no problems while other cannot select the backups, updates, ... Seems more like a TCP/UDP ssl port issue, but just over wifi. 

There are more and more people that do not have a need for computers these days and only use iPads/iPhones. Not to mention the majority of people do not abide by the 3-2-1 backup strategy or even think of backups until it's too late. For those people backing up to iCloud is better than nothing.

Not saying a consistent connection is not an issue for the majority of xfinity user that I know. And for those that say they don't have that issue, just don't notice it. 

This may be a solution and at least identifies where the  problem is:  I have the XB 8 modem. I logged into the router and turned off the 5GHz and 6GHz band (leaving only the 2.4GHz band). Backup worked fine. I turned them back on, and the backup problem returned. (I cannot use the solution to separate the bands offered above and in other posts because we use X1 pods.) BTW, Apple support was terrific in helping me to get to this conclusion.

I am having the same issue with my iPads. They will not do automatic backups, or allow me to update iOS or some apps. Also, my MacBook Pro will not sync photos from iCloud. 
I’ve spoken to countless Advanced Techs by phone, who all claim not to have heard of the issue, even ones I’ve spoken to more than once! Tech who came to the house said “we don’t do this” and wouldn’t even look or try to help. I don’t want to split my router, and even Apple advised against it. Been using an Ethernet cable for backups, but NO solution for syncing photos.

 I’m a new customer to Xfinity, and have had the issue since I changed over in late June. I’m pretty disappointed with Xfinity’s lack of response, and am locked into a 2-yr contract for Internet+Gateway. 

I have reset the Gateway several times, restarted all devices, “forget network” and reassign. Nothing works. Need some real tech assistance.

Here to say the same thing. Mine and my partner's phones haven't been able to automatically back up for weeks, I have to hop on my work's WiFi to manually make a back up because we can't rely on our Xfinity hardware. 

I get notifications through the night that my HomeKit cameras are disconnecting 3-4 times per night. 

My photos will not sync to my MacBook.

I had to restore my phone yesterday and had to restore from Cellular because it kept erroring out that it required WiFi while connected to my Xfinity WiFi and now today - the next day, almost none of my apps have downloaded back because my phone doesn't recognize it has WiFi. 

My 1000+ Mbit/s Comcast plan is giving me inconsistent at best service and regularly download speeds of as low as 12 Megabit/s speeds. Just awful.