Foss app to block spam calls (android)

Hello to all. Lately I've been receiving a lot of spam calls under private number. Is there a way to block them? Any app?

18 comments

I use Yet Another Call Blocker. It has a custom block list you can use to block a specific number.

The block list also supports wildcard characters, which is my favorite feature! I use it to block swaths of numbers (much of my spam comes from the state I used to live in, so I block those area codes).

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- Looks like it hasn't been updated in 3 years. Is it still maintained?
  
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  The app has not been updated in long time, but the database is still updating daily for me, and the app still works on Android 14. Can't tell it will continue working in the future...
  
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  You're right, I hadn't noticed that.
  
  Looks like the F-droid version is way behind, because you can see on their GitLab page that the project is still maintained. It'd be best to get the app directly through GitLab I suppose, or add an F-droid repo that has a more up-to-date version.
  
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- Block hidden numbers can it be that option right?
  
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  Yes. Go to settings and toggle the Block hidden numbers option
  
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- Downloaded and trying. Can block private numbers?
  
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  It can block hidden numbers, if that's what you mean by "private".
  
  I hope you like the app!
  
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@Tucumano88 try Fossify Phone. It allows you to block numbers not in your contact list and private numbers as well.

And the name says it all: it's FOSS.

🔗 https://f-droid.org/packages/org.fossify.phone/

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A couple options here: https://github.com/offa/android-foss?tab=readme-ov-file#-call-blocker--spam-filter

None of them are very big but they may be worth a try

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usually the built-in phone app will have an option to block calls from unidentified callers, no app needed.

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- Not in my case...
  
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If you're in the US and on a carrier that supports stir/shaken and voLTE, Carrion can block (or silence) calls that fail verification. It can also block calls from a block list.

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Been using NoPhoneSpam. While it won't automatically block any numbers, it will cancel incoming calls not matching its filters. Only issue is that, some times, it takes a few seconds for it to recognize not passing calls, but I think it happens when the phone is under a higher load and the system starts lagging a bit, like when downloading bigger files and playing games.

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- You know if it can block private numbers?
  
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