I keep getting spam calls from a number every night at midnight. I've blocked it, but now it just goes to voicemail and I have to delete the voice messages every morning. It's annoying. Is there an option to block it from leaving voice messages, or just automatically answer then hang up? I haven't found one in Android itself (my phone has ICS). I've also tried Mr. Number, which I thought would do this, but it doesn't. It does work, see update below. I've also talked to my carrier about it, but apparently I'd have to add "smart number blocking" or something to my plan for about $5 a month. If possible, I'd rather just get an app answer & hang up than have another fee to pay.

Delayed Update: I followed the directions eldarerathis provided below for Mr. Number and it does what I was trying to do; I must have just done something wrong before. The phone will still ring for a few seconds though, so it may be best to silence it if the call comes at a consistent, inconvenient time like it does for me.

  • How did you set up Mr. Number? It maintains two block lists, and one should be to answer + hang up immediately (the other is straight to voicemail). I use it exactly like you're describing. What happened when you tried to use it? – eldarerathis Feb 22 '13 at 5:15
  • It claimed it was blocking the number, but I was still getting voicemails. How did you make it answer & hang up? – Zelda64fan Feb 22 '13 at 18:27
  • I opened the app, pressed the blocklist button in the top right (the circle with a line through it) and then it gave me three tabs: "Hang up", "Voicemail" and "Exceptions". Then I pressed the "Hang up on Someone" button on the first tab to add the number I wanted to block. This is on a Galaxy Nexus. – eldarerathis Feb 22 '13 at 19:09
  • This can also be done with Tasker. – ZnewmaN Feb 22 '13 at 21:04
  • I'll try Mr. Number again--I don't think those were quite the same steps I took before, so I'll give it another go. I would try Tasker too, but $7 seems like a lot... – Zelda64fan Feb 23 '13 at 3:45

Not for Ice Cream Sandwich, but in Marshmallow, the stock call blocking also deletes voicemail.

Phone->Menu->Settings->"Call Blocking"

Calls from these numbers will be blocked and voicemails will be automatically deleted.

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  • This doesn't seem to exist in Nougat on version 11 of the Phone app from Google. – Jeff B Sep 7 '17 at 16:51

The free App call control works pretty good. You can have a number blocked and set up so it picks it up and hangs up. It doesn't let them leave a message and your phone don't ring. However If you go where you don't have service it will still send it to voicemail, but works great otherwise.

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