Sudden loss of iPhone Comcast email access

Found this Great answer:

https://discussions.apple.com/thread/254833656?sortBy=best

Essentially, log into Xfinity email using a browser, select Settings upper right, Security, upper left check “Third Party” authorization.

It took four days and two new iPhones because it appears to me Comcast didn’t warn users of the security change. Special thanks to the above Apple Discussions thread!!! 👍👍

FelipeV, Thanks for great insights! When I reboot the home router I get a burst of emails. When I leave home and get into better cell coverage or available WiFi, iPhone Mail is normal. It appears Apple or Xfinity changed something in early February that inhibits iPhone Mail flow via WiFi when Cell is enabled regardless of the quality of cell coverage. There is no coverage at our home. Once there I need to test by switching off Cell to see if Mail will populate via WiFi as it did before early February. More to follow next week!

Addendum: May not be 17.3.1 associated as wife’s phone is still on 17.2.1. But last emails were received just after 2PM CST 9 Feb 24. Hope that provides added troubleshoot insight. Also, IMAP and SMTP settings and ports appeared to be correct based on recent Internet posts. Thanks for any help.

Problem continues. Xfinity password works for browser login but in the Apple mail client every time I try to set up the Comcast email account I get the above flags! This is days wasted in frustration.

My wife’s same model iPhone is affected similarly but we never deleted her Comcast account. But her iPhone Mail client email appears to be queuing and comes in bursts hours and hours late.

Please help us understand what’s happening and correct it if possible. I depend heavily on my iPhone for family contact, business, and even hobby.

Thanks in advance for any help!

Well, it seemed like a working answer, but while the Comcast email account is established, the mail is stalled and is not downloading. Neither my wife’s nor my comcast email is updating from the iPhone Mail app, even when we pull! We both have allowed “Third party” sharing. It would appear our email is being trapped somewhere because a port or software setting that came with account set up is incorrect or no longer current. Can someone shed some light on this?

Thanks FelipeV! We did checked on line and confirmed all port numbers are current. The problem only seems to be our iPhone Mail client. Browser email work well consistently. When I was in town at the bank on their guest Wi-Fi, I got a sudden burst of Comcast email via the iPhone Mail client. I would then suspect my ISP, but comcast email is good via browser on home computers as well as via browser on the iPhones. I keep thinking there’s a driver issue between Xfinity and Apple’s Mail client interface software, but troubleshooting that declines into a finger pointing exercise. Somehow the Mail seems to be stalling in the server somewhere because of a missing handshake. But that’s all magic to me. Again, thanks for you post. We’ll keep watching port numbers. 👍

Thanks for great questions and ideas.

The local ISP could presumably be the cause, but there is no delay if we access Comcast via a browser either on the iPhone or with a Windows machine. The problem is exclusively with the iPhone Mail client. Mail may be getting through to the iPhones in bursts regardless of the WiFi source. But the delays are pushing 24 hours.

The problem is we have no cell coverage in our home and so I can’t compare cell and WiFi in the home. In the bank in town either a burst downloaded or the iPhone Mail client functioned normally. I can’t be sure which but suspect it was a burst.

The router could be an issue but at this point I have constraints beyond my control that preclude doing much more than rebooting.

I so appreciate your insights and help! I’ll keep working the matter later next week as I will be traveling. Using other WiFi may help the troubleshooting effort. I’ll post on my return. Thanks again!