iPhone XS iOS 13.3.1 + iPhone XS + LTE/cellular connectivity problems?

[uehithneu]

Hi, everyone. Today I made this same post in the 'troubleshooting' subforum but so far I've received no responses. Posting here, too -- for increased visibility. Thank you for reading!

Yesterday I upgraded from iOS v13.3 to v13.3.1. Since then I've had issues with LTE/cellular connectivity, necessitating device reboot. iPhone XS. AT&T. Forums here contain numerous posts about XS + LTE issues. My connectivity good for the past few iOS updates but, now, problems again!

Someone else here experiencing problems with LTE/cellular connectivity? Please give hardware details, software details, carrier details. Thank you!

 

[jakeuten]

iPhone 11 Pro, 13.3.1, AT&T, no issues to speak of here so far.

 

[ChaMouse]

iPhone XR, 13.3.1, O2 Germany.
Start experiencing intermittent network connectivity after updating to iOS 13.3.1

 

[bricktop_at]

Same here in Austria with provider 3AT on LTE/4G. Painfully slow speed unless I switch down to 3G. I had the problems since beta 3 and of course reported it.... no reaction yet.
I use an iPhone 11 Pro Max, suppose the problems have been introduced with the modem firmware 1.04.06

 

[snow755]

Have you tried doing a network reset ? After the update? When I 1st update I only had 1 bar I did a network reset and that did a trick and my network was back to normal

 

[bricktop_at]

Network reset didn‘t do any good, no change

 

[ChaMouse]

Have you tried doing a network reset ? After the update? When I 1st update I only had 1 bar I did a network reset and that did a trick and my network was back to normal

Network reset didn’t solve the issue.
i have full bars on my phone just the network is not working. With full bars 4G, I’m getting 0.1-0.4Mbs when the issue occurs.

 

[bricktop_at]

With full bars 4G, I’m getting 0.1-0.4Mbs when the issue occurs.

Pretty much the same behavior as on my iPhone - plus I experience connection drops and very high latency too

 

[bricktop_at]

Update: Same issue with 13.4b1 and the new modem firmware + carrier settings

 

[compwiz1202]

iPhone 11 Pro, 13.3.1, AT&T, no issues to speak of here so far.

None here with 11PM either, but I definitely had similar issues with XS Max.

 

[iPhonNick]

No issues here on my XS on iOS 13.3.1 with KPN NL. Speedtest is around 235 mb/s download with 2 bars of signal. With 1 bar, it's around 200 mb/s.

 

[bricktop_at]

Hm... since I only see this with one one of the two SIMs (one 3AT eSIM and the other A1) I still suspect some kind of SW problem