People calling me get a busy signal

Thank you for your responses.

This happened at home office in an excellent signal area and on WI-Fi calling.  Using a ZTE.  Discussed this issue with tech. several times.  Finally received an answer that seems to be working.  Will get back if not.  Apparently, having my Connection preferences setting to Wi-Fi preferred was (maybe) causing this situation.  Tech asked me to place setting on Cellular preferred which uses Cellular Network for calls.  If Cellular unavailable, use Wi-Fi.  Makes sense, I guess, since I am in a very strong signal area.  However, my Wi-Fi signal was also strong, so I do not know why that would cause a busy signal for callers.  In any event, calls seem to be going to voicemail now when I am unable to answer instead of a busy signal.

On my android:

Go to: Settings>More>Wi-Fi Calling>Cellular preferred

I found out what the problem is.  I went to the T-mobile store to see what they can check out for me and apparently what is causing this issue is the SPAM blocker set on the account.  I don't know how it got on there but in order for you to remove it, you will have to go into the T-mobile store or call them to remove that feature from your phone number and any other phone number on the account.  After 30 mins from them removing this, I can now recieve calls from everyone from AT&T and other carriers.  Hope this helps.

My mom has been having the same trouble with her Samsung Galaxy S8+ for about a year. Some people, her sister and another daughter just to name 2, would always get a busy signal when calling her. I noticed that when I went into her T-Mobile phone app and went to line details, above the Scam ID option was a Scam Block" option as well. My Samsung Galaxy S9+ on the same account didn't have the Scam Block option. I did some researching on the internet and found that if you type #632# into your phone's dialer and hit the green button, it will turn this Scam Block off and the callers are then able to call in without getting a busy signal. So for further understanding, #662# turns Scam Block on and #632# turns Scam Block off. This does not affect the Scam ID option.

(Note: I do believe both my sister and my aunt are both on AT&T, if that matters to those trying to troubleshoot this problem.)

Hope this helps.

@magenta6928175​, no need to go into the store. This is something you can do yourself. 😊

This is a common and very vexing issue. After much troubleshooting I figured out that it was the Tmobile NameID spam blocking service. I disabled that and the problem magically went away, after trying virtually everything else (to include SIM swapping to other phones).

Turn that off, and perhaps DIGITS as well, and you should be golden.

Well that is incredibly strange! Do you happen to notice how many bars of signal your phone shows when this happens? Does this tend to happen more frequently when you are in a specific area?

¡Hola, @daddyo1425​!

I have to agree with Chris - this is super strange! What type of phone are you using? Does location matter? As Chris asked, when this happens how many bars of signal do you have? Lastly, have you talked with Tech Support regarding this yet?

That is good to hear! Please do let us know if the situation changes.

I am having same issue and took my phone off wifi calling like you did months ago. Still getting message on my work phone from my neurologist, my doctor's office, my bank all saying they have tried to call me all day but just get a busy signal. How many other people have tried to call me just to get same that I don't know about. I own a company.

I need these calls to come through or be able to leave a message.

I have a Samsung Galaxy 8plus, I never had this issue with Verizon, ever. I want to stay with T-mobile but I am getting a feeling this is something with the network.

Hola @magenta5655286 

Is this happening with 100% of your calls or just certain callers?

To my knowledge, it is not happening when someone is calling from another cell phone, every time someone has told me it has been from landlines. Yesterday my doctor's office tried to call multiple times just to get a busy signal, they finally called my office phone and left a message, thank goodness. So I have no idea what I am missing.

My husband, who is on T-mobile, does not get half my text messages, I get all of his, but about 1/3 of mine don't go through to him. This has been very frustrating because I don't know what he has not received.

I work from home so I am in the same location all day every day. No signal problems.