Voicemail not working - The Mailbox Number You're Trying to Reach is Not in Service

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Mobile voicemail sucks can't receive any voicemails says not in service made numerous calls and still unresolved seems no one wants to help they lie when they will call you back wish I would have never went to them for Mobile service 

I am having this exact same issue.. so is my wife. We spent time on chat, as well as on the phone.. we even went into the store where we switched to Xfinity mobile... It's been a week now and so far no one has been able to help us.. I think I'm going to have to start over with a different service.. the phone and texting is great, but I can't have people calling our phones and the voicemail saying this line it's not in service.. and no one has a solution

Still no solution here.  2022 and Xfinity Mobile can't figure out why we can't have our voicemail setup correctly.  

We switched over a month ago and have spent hours trying to get our voice-mail set up. I'm beyond frustrated and an considering switching our 5 lines back to Verizon. Who is the worst but at least we have voice-mail. 

ME TOO!!!  I’ve spent hours on the phone the last 5 days. It gets elevated to advanced team and they swear they will call back. Never do. I’ve tried everything I can and no solution.

The one thing different about my situation is that it worked fine until a week or so ago. Now it just keeps asking for a mailbox number.

I see no resolution in sight other than dropping xfinity and going to another carrier.

Couldn't take not having a voicemail so I paid off my phone so that I can transfer service to another provider..submitted an unlock request for my phone..[Edited: "Inflammatory"] deactivated my number.  Unreal.  I hope people see this thread and go elsewhere, Xfinity Mobile is the worst. 

From what I can find, Xfinity has no reliable fix for this.  You can, however, work around it.  The Voxist app from the Play Store (or voxist.com) works as a voicemail replacement.  It uses the call forwarding feature to redirect declined or missed calls to Voxist.  For Xfinity you use Verizon as the provider and select monthly plan to get the correct forwarding code.  I just did this to fix my Mother's voicemail issue with her new Xfinity phone.  Visual voicemail is limited to 10 transcriptions per month for free but audio has no limit. Notifications work correctly and it provides an additional notification via email.

Does anyone know the cause of this issue?  When we got the new phone I did a test voicemail latter that day to show her how to listen to them and it worked.  All I remember doing between when voicemail worked and when it stopped is I pulled the sim out to add a sd card and the phone was off when I did it.  I did read where a possible fix is to have the sim card replaced.  Is removing and reinserting the sim a possible cause?

Oooh, interesting. I do think it was removing the sim card that caused this issue in my phone.  Someone just told me my voicemail isn't working, and now that you say that I realize I removed my sim card a week or two back. 

Anyhow, I used the text chat feature and they fixed it for me in about 5 minutes. 

I went to the Xfinity store near me. They did get it fixed. Unfortunately the fix was only temporary back in the same boat. Xfinity is a joke. Big mistake. Fortunately I am not under a contract as soon as my new phone comes in it's goodbye Xfinity mobile. I've spent hours on the phone with technical support they couldn't help me. If anybody tries to reach me and I can't get to the phone in time they're told my phone number is not in service.

Even having a problem with their voice over internet. You can't call out sometimes and people can't call in. Goes right to voicemail and again says the phone number is not in service. . Periodically the television comes up with a message about not being connected. I've recently spoke to the executive customer service in virginia. They told me that sometimes there's little glitches. I told them if you can't provide reliable service don't offer it. Warn everybody not to switch to Xfinity for anything. 

I went to the Xfinity store near me. They did get the voice mail working. Unfortunately the fix was only temporary back in the same boat. Xfinity is a joke. Big mistake. Fortunately I am not under a contract as soon as my new phone comes in it's goodbye Xfinity mobile. I've spent hours on the phone with technical support they couldn't help me. If anybody tries to reach me and I can't get to the phone in time they're told my phone number is not in service.

Also having trouble with the voice over internet and television service. There was a three or more hour period where I couldn't call out and nobody could call in.. periodically the television goes out and it says it's lost the connection. Spoke to somebody at executive level customer service. The response to me was, sometimes there's glitches. I told him I haven't even had the service a month and I've had nothing but problems and issues. I told them, if you can't provide dependable service then don't provide anything. I have responded to surveys asking if I would refer people to Xfinity...BIG NO. I have relayed ALL THE ISSUES I have had. I never hear anything back. Warn everybody... DO NOT SWITCH TO XFINITY FOR ANYTHING!

P.S. XFINITY... DON'T RESPOND THAT YOUR SORRY ECT... DON'T POST NUMBERS FOR PEOPLE TO CALL...JUST FIX YOUR ISSUES!

They fix mine but after they fixed I login to xfinity mobile app on Google play that made my voicemail quit working for me.but they got it back working they had to call someone else reset it. 

I have mine fixed also. After stopped by store and the staff have no clues what’s going on and refused to help. 

But luckily, I decided to call in another time and address that I have tried reset network settings and vmb password but still not working. She forwarded me to some advanced tech guy and looked into the issue. 

The problem was when you switch from ios to android or the other way around, you have to call in and reset the voicemail box settings. I guess carrier needs to bind different settings to visualize the voicemail box. Unfortunately 99% of xfinity mobile staffs are not that well-trained to understand the cause of this issue. 

Same issue here :( I should have never switched. AT&T was the best