International Roaming & Rejecting Incoming Calls

Forwarding all calls to Google Voice would work but you'll probably face another problem. T-Mobile won't let a line roam permanently. They'll cut it off after a certain time. It's not automatic, rather it's a manual review after the line is flagged. You might get around this by swapping the two SIMs every 6 months.

I have a smiliar question ... The situation is I'm added 2 lines to my T-Mobile ONE plan, specifically so my 87 year old grandmother can video chat with her sister in Germany since there would be unlimited data. If I don't set up the voice mail for the line I send to Germany, would blocking all calls or blocking calls other than the contacts list still prevent charges? I'm just concerned the line I send to Germany will have a recycled phone number and someone else's bill collectors will be calling. Do you think that forwarding all calls say to my line or to Google voice or something similar would work better?

Thanks so much for your help!!

We don't typically disable voicemail as it involves us deleting your voicemail feature from your account which in turn deletes all your saved voice mails and greetings. If the rep you spoke with said it was possible, just be aware that it is essentially going to reset your voicemail to defaults.

The villain in this story is DCF (Default Conditional Forwarding) this is a feature in the switch that prevents the customer from turning off conditional forwarding, which normally how calls get sent to voicemail. At one time, T-Mobile didn't have default forwarding to voicemail, like they have now. Even for years after they instituted DCF I was able to get Tech Support to turn it off on my account. That was then. Today, they won't even try to turn it off. This forces the customers to  either pay for incoming calls they don't want or go through all sorts of work-around to avoid it.

I've given you some options that I know of. Not sure what else you can do.

Hola Chris,

Thanks for getting back to me! Yes, ideally I still want to be able to get calls so that's why I thought the disabling the voicemail option may be the best method for me as it will still allow me to get calls I want to answer and ignore calls I do not want to answer (telemarketing calls) and not get charged for them. A t-mobile rep that was following up with me about this just called and said it can be done (disabling the voicemail) and that in turn will avoid any charges hitting the account if you ignore calls. So there seems to be some conflicting info. about all of this..

Hola @magenta4141059

Just looking to clarify things here. Are you wanting to be able to get calls but not let the callers leave you a voicemail while you are roaming? If so, there is not really an easy way to do this as disabling voicemail altogether is not something we are typically able to do. If you want to have full control over what you are charged for while roaming, I would recommend following the steps I outlined in the thread that @drnewcomb2  linked and changing your voicemail greeting to ask callers to send you a text message if they want to speak with you. If you feel that after getting the text from them it would be better to speak with them on the phone, you can utilize Wi-Fi calling (when in a Wi-Fi area) and call them back and it will be $0.00/min if they are in the U.S. Enabling Wi-Fi calling is a bit different depending on the device you have but if you search "Wi-Fi calling (your device)" in our search bar, it will take you right to the steps.

@tmo_chris

Please help as I plan to travel soon.

Thanks for your reply. I think one of the options will still allow for you to receive calls if you want to answer and the other option will not let you see calls coming in on your phone. From my understanding these are the ways to not get charged:

1. Call to disable Voicemail and turn off call forwarding (you will still get phone calls)

2. Disable Voicemail and set up Call Forwarding to Google Voice or Voicemail (you will get voicemails but calls won't show up on phone).

Correct me if i'm wrong? Both of these options should not incur a fee/charge when someone calls and I don't answer.

Yes to both questions. If you get a lot of incoming calls that you don't want to receive while you are abroad*, the best way to handle it is to forward all your incoming calls to voicemail (i.e. Unconditional Call Forward). In Free Data Roaming countries you can check your Visual Voicemail for free (I think). You can text your reply or wait until you're in WiFi coverage to call. I'd also, change my voicemail greeting requesting that people text or e-mail you, rather than leaving voicemail. There's a recent thread on this subject. Overseas Travel: How can I avoid incoming call costs but still use free text/data roaming while abroad?

*Imagine you're in Japan where there's a 13 hour time difference, someone calls you at 2:00 pm in the US, but your phone rings at 3 am in Japan.