Level 1

48 points

Caller ID shows "Unknown"

I'm using an iPhone 6, with the latest software 8.1.2. My carrier is AT&T. I never had this issue up until about 2 weeks ago. Every now and then the caller ID shows "Unknown" when I receive a call. Sometimes even if they are in my contacts list, but not always. Before it didn't matter if they were in my contacts or not it would still display the 10 digit phone number. I called AT&T after reading on here it's on the carrier's end of things. The agent checked all my settings on my account on AT&T's end and said everything looks good, but he did ping my phone. I checked it by messeging a couple of my contacts and had them call me and their ID's came up, but they are using cell phones, I just tried from by business land line and "Unknown" showed, so did Unknown show from my Mother's land line, it seems that any land lines are not showing up on caller ID, even before if they weren't in my contacts the number would still show up.

Posted on Jan 5, 2015 12:41 PM

29 replies

sberman

Level 10

272,940 points

Jan 5, 2015 7:54 PM in response to Housedoctor

Interesting thread. I haven't knowingly personally experienced VoLTE calls, especially not from VoIP telephones. It's interesting as well that since these calls do not use the standard wireless voice method, it appears as if they don't even show up on your wireless phone bill as calls.

The other responders clearly have a lot more experience with this than I do right now. I've certainly learned a lot here.

tuba1153

Level 1

0 points

Mar 12, 2015 9:28 AM in response to Lawrence Finch

We are having the same issue. I was able to correct the outbound Caller ID formatting on my Cisco PBX by routing it through an Asterisk PBX first, then on to the Cisco PRI gateways. The problem appears to be (in our case) how Cisco presents it's caller ID as a Private Branch Exchange over the PRIs. The Asterisk PBX "simplifies" the CallerID and formats the CNAM and CLID correctly before presenting the CNAM and CLID to the ATT PRI. I also noticed that if I send the Call out a CenturyTel PRI that the Caller ID works fine when presented from a Cisco Call Manager.

Jun 16, 2015 2:30 PM in response to Housedoctor

I have same problem here in Brazil using iOS 8, iPhone 6 and VIVO as carrier. About 60% of income calls are identified as "Me" 😐 and others are correctly identified.

Note I've opened a request at Apple and they replaced my phone by a new one!!!!!!!! This new iPhone 6 still running the same problem.

LOL!

Aug 7, 2016 4:28 PM in response to Housedoctor

I had this problem with my new iPhone 6 Plus. Calls from many known callers showed up as "Unknown" on the 6 Plus even though they showed up properly identified on my spouse's iPhone 6 Plus. Problem was solved when I asked Verizon to discontinue "LTE Calling" on my account. This is not a setting that can be accessed on the phone or on the Verizon website. You must ask one of their customer reps to do this on your account.

Housedoctor Author

Level 1

48 points

Jan 5, 2015 1:59 PM in response to KiltedTim

Report to who Tim?

Housedoctor Author

Level 1

48 points

Jan 5, 2015 2:00 PM in response to sberman

I went to AT&T website thru your link sberman, searched all over can't find anyway to view incoming phone numbers.

Jan 5, 2015 2:01 PM in response to Housedoctor

Under Usage it will list every call, after it completes.

ChrisJ4203

Level 10

236,315 points

Jan 5, 2015 2:33 PM in response to Housedoctor

The only way to find out if it will work is to receive a test call from one of the lines you got unknown from. If they work, then everything is okay for now.

ChrisJ4203

Level 10

236,315 points

Jan 5, 2015 3:03 PM in response to Housedoctor

Since you are not receiving the Caller ID on the Charter calls, you will have to do what Lawrence provided. Contact AT&T and have them remove the VoLTE from your account for right now.

Housedoctor Author

Level 1

48 points

Jan 6, 2015 6:39 AM in response to Lawrence Finch

should I contact Charter Lawrence and/or my AT&T cell service?

jgshier

Level 1

0 points

Mar 13, 2015 10:16 AM in response to tuba1153

What format did you use? i.e. +1 (XXX) XXX-XXXX

Jun 16, 2015 4:07 PM in response to plinioruschi

That's because the problem is in the carriers network and has nothing to do with the phone. As you can learn by reading the other messages in this thread.

Oct 28, 2015 8:54 AM in response to Housedoctor

Call the customer care of your network provider. Inform the issue and ask them to activate the CLIP (Caller line identity presentation). after activation it will be solved.

Nov 9, 2015 9:54 AM in response to Housedoctor

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Caller ID shows "Unknown"