Knocking sound on iPhone calls

Me too…. on the phone with my boyfriend and i start to hear knocking on his end as if someone was knocking on the wall from the room nextdoor. He couldn’t hear it, so i thoguht i was going crazy but i’m glad i found this thread. We’ve watched a few horror movies the past few days so we were quite spooked lol. Super weird, such a clear and distinct knocking on wood sound. Never happened to me before but i do have t mobile as well.

I'm having the same knocking issue on my iPhone 11 pro and T mobile. I'm also using a headset and can hear the sound with or w/o the headset. It doesn't sound a knock on wood to me. More mechanical but I'm sure its the same thing. Any help?

I am not fear mongering at all. That is not my intention. I am just stating the very likely possibility. With so many phone calls to the phone service providers, & they are unable to “find anything.” Even a mild Google search will lead to the same conclusion.

I don’t think that you quite understood the point that I was trying to make, but I digress. Continue exploring for the answers that neither Apple or the cell providers are unable to assist you with. I am talking from experience, because the same thing happened to me.

I have the same experience. My carrier is T Mobile and I thought it only happened when the person I was talking to was on speakerphone. However, I'm trying to isolate it; it also happens when I leave a VM. It's not a dirty screen or anything on my phone. It's a system problem. It's not a sharp knock. I also don't believe that it's due to a wiretap. The govt has better ways to do that without letting the user hear clunky noises in the background. I can do better than that by simply using one of off the shelf recording software available online.

Absolutely. The same thing that is described in this thread was happening to me for a couple of years. Went to Apple, reached out to the cell providers. Received the exact same info that they are telling you all.

Same provider, switched phones several times as instructed by Apple, & cell phone provider. No difference. It is still happening. Doesn’t happen when I’m on the phone with my wife, but every other call, it’s knocking on wood noises, scratches, static, echoes, etc. Going on year 5 now.

I too hear the rhythmic knocking on wood when on a cell phone call.

It is not static. It is not clicking. I hear it when I'm talking regularly with the phone to my ear, on speaker, and on Bluetooth hearing aids. I get it talking to a different area code. I use T-Mobile. I get it talking via my iPhone SE 2022 to a Galaxy Android. I can hang up and call again and the problem will stop but may crank up again on that new call.

It seems to me to be a network problem. Only I can hear it and not the other party.

Weird that it sounds just like someone rapping/tapping on a wooden table.

Good luck with it.

If I can help you (Apple) in any way to investigate I will.

Here's a little more info. I tested it this evening. I hear it when: The other person is on speaker phone, I've been put on hold, the other person is in their car ( this might be another form of speaker phone), and there is a long pause in the conversation. Basically, the only time it isn't knocking is when I'm speaking directly with someone and there is an ongoing conversation with no gaps longer than about 10 seconds.

follow below

1. Remove all screen protectors, films, or cases from your device.

2. Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver isn't blocked or dirty.

3. If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.

4. Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service.

5. If you hear sound, try making a call with your iPhone and turn on speakerphone. On iPad or iPod touch, make a FaceTime call. If you still can't hear, or hear static or crackling, then your network or reception could be the issue. Try to call again later, or from a different location.

[Edited by Moderator]