Knocking sound on iPhone calls

Why do you I hear a knocking on wood type of sound when I am on the phone with other iPhone users? Does anyone else have this problem? It is very annoying I tried iPhone reset and carrier and hardware and no luck


[Re-Titled by Moderator]

iPhone 13 Pro

Posted on Apr 3, 2023 12:15 PM

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Posted on Jul 31, 2023 7:58 PM

So I’ve been having the same issue, I thought my friend I talk to all the time was doing major remodeling. Anyway, I also have Mint, so today I tried turning WiFi calling off and that seems to work, I’ve been on the phone for a few hours and the hammering is gone. Give it a try!

206 replies

Oct 24, 2023 4:43 PM in response to AppleID4me

I too have this on 2 iPhone 14 Pro Max running iOS 17.0.3

I swear I never noticed this until iOS 17 but both phone are indeed on T-Mobile.

It seems random and I cant always reproduce it either but it doesn't seem to matter who calls whom meaning inbound -vs- outbound in our case but both phones do this so it's not likely a bad handset.


I've always had random odd issues with TMO and they either never understand my complaint or do not acknowledge it but sometimes something somewhat gets corrected. Maybe the right person has to complain. I don't know. Once they dumped most of their T-Force support group to save money, support went into the sewer. At least with them we had SOME chance of SOMEONE listening to our issues.


:-/



If I could get the same pricing with VZW or someone else, I would port out but no one can touch the pricing and features we have with TMO, so we tend to put up with their network issues in exchange for excellent pricing on cellular.


I am looking once again at USCellular due to the fact they are regional and we have better access to support and engineers that might actually care about what the customer experiences. Who knows...


Nov 7, 2023 11:46 AM in response to Micahru

There is literally no one left at TMO that has any decent skills now. I had an internal engineer in Chicago I used to be able to reach out to for weird **** like this - but he quit, walked out and that was the end. Now when I have issues I typically have to wait until someone 'important' complains to get it addressed. You can open all the tickets you want, but I bet they will tell you wait 72hrs and then when you call back, they will tell you the so-called engineers didnt find anything. I literally have given up on calling TMO except if I have a billing issue.


But yea, the price cant with TMO be beat (especially if your over 55) so I put up with it.

We have (3) iPhone 14 Pro Max and all of them do this knocking. I don't believe it's an Apple issue but maybe the next Carrier update (higher than 56.0) could possibly address this - but really, who knows.


I haven't reported this to Apple nor TMO for obvious reasons and finger pointing. Switching providers might solve the symptom but not fix the underlying problem. I will keep monitoring this thread in case someone reports back with some success somewhere. Until then, I live with it.


Nov 20, 2023 9:42 AM in response to yvonne_l_m

I too have only experienced this on TMO or VZW.

Not on any other carrier I have used.

Even USC here in the midwest doesn't have this issue.


But the increased monthly costs to switch to someone such as AT&T doesn't work for us.

I'll put up with it for the rather large savings and simply presume at some point, maybe after a carrier update, the issue will silently go away..


No one else can touch the price plans we are 'grandfathered' in with TMO but if some day the plans are changed on us (forced to a new plan) then maybe at that point I would switch.

Nov 20, 2023 9:53 AM in response to yvonne_l_m

We have 5GUC here and consistently get over 500mb/sec download speeds. Of course we live 1 block away from the TMO site in town. I had thought about this but my plan (while grandfathered due to the Go5G plans) isnt all that old.


Hard to say if there is any connection here or basis to your theory but it is food for thought. It's crossed my mind but seeing that I had the same issues on a normal plan with VZW, I'm not sure what to make of that at the moment..

Nov 25, 2023 9:46 AM in response to Leesee46

It's not the phone. We have (2) here that both do it and my iPhone 13 did it too. That rules out the model at least.

Bottom line, we either have to wait until someone important enough reports this to get it addressed or live with it OR change carriers.


Yea it's annoying but not enough for us to change companies. If someone ever connects with an inside engineer at TMO, we might have a chance. I had a decent guy inside in Chicago that was my go-to for weird stuff like this but he quit like almost all of the decent engineers around. I don't even know where they all go.


Reporting it to Apple seems to do nothing, so advice here is to tell others not to waste your time with a so called Genius Bar appointment.


I mean really, talk about an oxymoron within Apple...


Keep hoping for a carrier update that MIGHT address this issue within the phone but I'm not certain that will fix it.

Nov 27, 2023 4:23 PM in response to RonRon725

TMO has a group on Twitter (X) now, called T-Force. I know the company CEO dumped the majority of the staffers in that group as he claimed they were not needed. What BS. They were a great group that would really try to help and from what I gathered, all USA based. Since they schwacked most of the staff, I haven't tried to reach out - but if someone wants to, thats where I would start as well...


Good luck!

Dec 10, 2023 7:58 AM in response to Techquestions_333

I wish people would stop swapping out their phones. Besides the hassle, it WILL NOT fix this issue.

Posting in here won't help guys. I'm fairly sure TMO doesn't watch this board and even Apple.

Reach out to TMO support and complain.

Open a case with Apple to 'log' this issue but KEEP your phone. You could use that to tell TMO that Apple said the equipment is AOK.


Hit TMO on social media like X (Twitter) and report this to someone that might actually DO something to help.

Feb 10, 2024 7:53 AM in response to Leesee46

I dont understand why people continue to try and swap phones out.

It's not the physical phone guys..And thats been stated over and over again on this thread here but I suspect due to the habit of "TL;DR" - people aren't reading all of the posts, so I continue to try and post here and there not to bother swapping the physical phones out. Besides a pain (even with backups) to restore the phone - it will not address anything here.


This will be fixed either when TMO addresses it and/or Apple releases an updated carrier patch.

We need someone on the inside @ TMO that is here in the USA and has a brain. Yea..good luck, right?


I wouldn't hold my breath for either to address this issue.


..they just fixed the type/text issue that has been plaguing us since early Nov 2023, so obviously there is no rush to fix even important things like that - much less something that doesn't affect EVERY iPhone owner based on their cell carrier.

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Knocking sound on iPhone calls

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