Knocking sound on iPhone calls

I too have had the same problem I noticed for about a year or more now. It was in my iPhone 13 but now my iPhone 12. The person on the other end does not hear it. I actually recorded it because it happens frequently. Glad to know it’s not just me. No, you’re not alone.

I have had knocking noise with ATT, T-Mobile and now Mint. I noticed it a little over a year ago. It happens so frequently I feel like someone on the other end wants me to know they are listening. I keep my Wi-Fi, Bluetooth and even internet off but it still happens. I’ve learned to live with it because I’ve waisted too much time at the Apple Store and with service providers. The only thing that bothers me most is when my screen goes back and it forces me to look at the camera before ir comes on although all settings are off. Apple seem to have no answers for that either. They had my phone for two weeks and the problem persist. Go figure.

audiophile1970 wrote:

I’m on Verizon and don’t have any issue. My wife is on Mint mobile which is now T-Mobil and has the issue. I have an iPhone X and she has a iPhone 14 pro max.

Based on the anecdotal data in this thread, it's a TMobile network issue.

I know what it is. It happened because my iPhone was making a FaceTime call to my sibling. She evidently did not know about it. I did not call her, so it was a call made from my phone in some way. Outgoing FaceTime calls “knock!”

It is not an issue. Sorry. It is a normal. The knocking is what an iPhone does when dialing a FaceTime call. I do not use FaceTime, but for some reason it called the other phone. That might be a question. Why did it dial the other iPhone. A mystery to me. Other than that, there is no mystery. FaceTime call.

iPhone XR on Mint Mobile (T-mobile network). I've noticed the knocking for about 2 years now. Thought my phone was tapped, but reading this thread leads me to believe that it's a network issue with T-mobile / Mint Mobile. Sucks.

I've also been experiencing this issue, without a doubt the sound is that of knocking on wood in a steady cadence. However I am using a google pixel 7 pro, and my carrier is google-fi. My girlfriend who is the only person im on the phone with often enough to have noticed this occurrence is on an iphone, i dont know which carrier. She heard the sound once, but it was likely an echo from it happening on my phone.

I have the same issue exactly. I phone 13 T mobile past 8 months. It sound like a wooden clipboard with paper on it.It is distracting and disruptive. Glad I’m not alone. I hope there is some solution to the problem

KTSMIND wrote:

I have the same issue exactly. I phone 13 T mobile past 8 months. It sound like a wooden clipboard with paper on it.It is distracting and disruptive. Glad I’m not alone. I hope there is some solution to the problem

Keep telling TMobile. Only they can fix their network.

It’s a fault in T Mobile and their networks - it appears to be related to iPhone as the noise has not been reported on Google / Android Phones. The noise is also not reported on Networks not operated by T Mobile.

Regardless of the Iphone I get I tend to get I have had this issue I also have the Iphone 13 and use T-Mobile and the knocking never stops for me unless the person starts to talk but when it’s quiet I can’t stop hearing it. Can someone let me know if they find a reason to this?

I was with sprint which is now acquired by T-Mobile. I have the same issue. There’s a knocking sound at a specific tempo. The weird part is that I only hear it when I call one of my friends. It doesn’t happen with anyone else :/

I also have this issue, tmo, 13pm, ongoing for last 18 months. It only occurs if I call a certain number, and I must initiate the call for it to occur. If they call me, the noise does not occur.

If you have this issue, please do respond here so we can grow awareness.