Verizon did have reports of network issues this morning for a time, where it 
seemed their HLR (where SIM cards register to on the network) was being flooded 
by AT&T devices attempting to register on their network (which is what cellular 
devices will do when it can’t register). But it cleared up quickly.

Other reports of T-Mobile/Verizon outages appear to just be users who can’t 
contact AT&T users.

Sterling Jaynes
Director of IT Operations

From: Outages <outages-boun...@outages.org> On Behalf Of Jim Harton via Outages
Sent: Thursday, February 22, 2024 12:25 PM
To: Josh Luthman <j...@imaginenetworksllc.com>
Cc: outages <outages@outages.org>
Subject: Re: [outages] [EXTERNAL] Re: ATT cellular network 2024-02-22


** This email was received outside the organization and contains one or more 
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A lot of the individuals who claimed to have service issues (at least locally) 
using TMO and VZW claimed that because they were attempting to call individuals 
on AT&T.  In two cases of individuals I talked to they had full voice and data. 
 I haven't seen any confirmation on other providers being down, and VZW put out 
a statement stating they were aware of "another carrier" being down, but they 
were unaffected.

Example from news:
> Verizon said Thursday morning that the outages are not affecting its network 
> directly, only customers trying to reach another carrier.
> T-Mobile also said early Thursday that the network didn't suffer an outage 
> and is operating normally, and Downdetector numbers likely reflect customers 
> attempting to reach users on other networks.

Source: 
https://www.nbcnews.com/news/us-news/t-verizon-t-mobile-customers-hit-widespread-cellular-outages-us-rcna139938<https://www.nbcnews.com/news/us-news/t-verizon-t-mobile-customers-hit-widespread-cellular-outages-us-rcna139938>

On Thu, Feb 22, 2024 at 11:44 AM Josh Luthman via Outages 
<outages@outages.org<mailto:outages@outages.org>> wrote:
Can anyone confirm issues with anything besides AT&t? This all seems like 
speculation at this point.

On Thu, Feb 22, 2024, 12:39 PM Owen DeLong via Outages 
<outages@outages.org<mailto:outages@outages.org>> wrote:
Modern phones don’t use hardware sims to the best of my knowledge, using e-sims 
instead.

(Though I think there is still a slot for a hardware sim in case you need to 
work with a backwards carrier).

I’ll note that this outage apparently affected ATT, Verizon, and T-Mo which 
account for the vast majority of licensed spectrum in the US. (Basically all 
three primary carriers and thus likely every MVNO as well (several of them were 
also mentioned).

An extra SIM might not have been helpful in this case.

Owen



On Feb 22, 2024, at 09:31, Tim Burke via Outages 
<outages@outages.org<mailto:outages@outages.org>> wrote:
 Agreed!

After reading through more lines of someone’s extremely obnoxious email 
signature than actual discussion in this thread, it seems like there is a huge 
amount of panic associated with this. Yes, it sucks that outages happen, and 
they shouldn’t happen… but cell service is a best effort offering and we cannot 
control the telcos and their DR plans (or lack thereof).

Modern cell phones all have dual SIM capabilities, afaik. If your cell phone is 
as critical as its played out to be, get a second SIM on another carrier. Even 
if it’s just a cheap prepaid SIM on an MVNO that doesn’t use the same 
underlying carrier… It’s cheap insurance to keep you connected.


On Feb 22, 2024, at 09:36, richey goldberg via Outages 
<outages@outages.org<mailto:outages@outages.org>> wrote:

Remember.  This stuff is still designed, built, and maintained by humans.       
At least for now…..  😊


-richey

From: Outages <outages-boun...@outages.org<mailto:outages-boun...@outages.org>> 
on behalf of Kenny Sallee via Outages 
<outages@outages.org<mailto:outages@outages.org>>
Date: Thursday, February 22, 2024 at 10:22 AM
To: Lederer, Linda 
<llede...@quakervalleyfoods.com<mailto:llede...@quakervalleyfoods.com>>
Cc: outages <outages@outages.org<mailto:outages@outages.org>>
Subject: Re: [outages] [EXTERNAL] Re: ATT cellular network 2024-02-22
I encourage my customers to always assume carriers, hardware, and software are 
going to fail and have backup plans/methods.  Either the business pays for it 
before it's needed or they lose money or productivity that affects the bottom 
line.  It's a pretty simple equation: Hey Boss, if the business is OK with 
outages we do not need backup/redundancy.  But if we are out for x hours it 
will cost y dollars.  What's your business decision: pay for redundancy/backup 
or be ok with outages? Redundancy is not necessarily a technical issue; it is a 
business issue.

;)

On Thu, Feb 22, 2024 at 7:38 AM Lederer, Linda via Outages 
<outages@outages.org<mailto:outages@outages.org>> wrote:
We use a fleet tracking service called Samsara which uses ATT – so this has 
been lovely….

Linda Lederer
IT DEPARTMENT

<image001.png>
2701 Red Lion Road
Philadelphia, PA  19154
Office:  215.992.0900
Ext. 238

<http://www.facebook.com/quakervalleyfoods/>
<image002.png><http://www.facebook.com/quakervalleyfoods/>
<https://www.youtube.com/channel/UC5DfxpLA6aGpeCwMvrNFxFQ>
<image003.png><https://www.youtube.com/channel/UC5DfxpLA6aGpeCwMvrNFxFQ>
<https://www.linkedin.com/company/quaker-valley-foods>
<image004.png><https://www.linkedin.com/company/quaker-valley-foods>
<http://www.quakervalleyfoods.com/>
<image005.png><http://www.quakervalleyfoods.com/>

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From: Outages <outages-boun...@outages.org<mailto:outages-boun...@outages.org>> 
On Behalf Of Begarowicz, Shawn via Outages
Sent: Thursday, February 22, 2024 9:13 AM
To: Rob Repp <robr...@winnetka36.org<mailto:robr...@winnetka36.org>>; Jeremy 
Gault (KD4NED) <jer...@gault.us<mailto:jer...@gault.us>>
Cc: OUTAGES Mailing List <outages@outages.org<mailto:outages@outages.org>>
Subject: Re: [outages] [EXTERNAL] Re: ATT cellular network 2024-02-22

Our whole fleet uses ATT and it seems to slowly be dropping with all of them  
just not at the same time..   I agree cant wait to see the post mortem






Thank You,
Shawn Begarowicz (Technology/Service Manager)
Complete Interactive Technologies
44265 Groesbeck Highway
Clinton Township, MI 48036
586-439-2000 Ext. 120 | 586-439-2001 Fax
586-913-2420 Direct Tel | 586-203-4940 Direct Fax
586-883-4037 Cell
shawn.begarow...@cit-4u.com<mailto:shawn.begarow...@cit-4u.com>
www.cit-4u.com<http://www.cit-4u.com>
For Technical Support:
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________________________________
From: Outages <outages-boun...@outages.org<mailto:outages-boun...@outages.org>> 
on behalf of Jeremy Gault (KD4NED) via Outages 
<outages@outages.org<mailto:outages@outages.org>>
Sent: Thursday, February 22, 2024 9:09 AM
To: Rob Repp <robr...@winnetka36.org<mailto:robr...@winnetka36.org>>
Cc: OUTAGES Mailing List <outages@outages.org<mailto:outages@outages.org>>
Subject: [EXTERNAL] Re: [outages] ATT cellular network 2024-02-22

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One thing I have noticed: At least in some affected areas, it doesn’t appear to 
be all customers affected. For example, my phone and tablet have no service, 
but my watch will connect to LTE just fine and place and receive calls.

Likewise, a buddy of mine came by here, and his phones have full 5G service on 
AT&T. I’ve also seen other reports of multiple AT&T phones sitting next to each 
other, some of them working perfectly fine, and others having no service at all.

I’d love to see the postmortem on this.

Jeremy


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