Add a toll-free number preset - regex is overkill for this common case

[tmastran]

The feature

90% of my spam comes from Toll Free Numbers.

Blocking toll-free numbers (800/888/877/866/855/844/833) currently means writing a custom regex. Getting it right isn't trivial. You need to handle the country code being stripped inconsistently (leading +, 0, or 1), or you end up either missing numbers or accidentally matching unrelated ones. It took me a few rounds of testing to write something that worked cleanly.

Since you already have presets for cases like the private/hidden numbers, maybe toll-free could get the same treatment? A simple toll-free preset instead of asking users to try and write this correctly:

[01]?(800|888|877|866|855|844|833)\d{7}

I'd target this to NANP (US/Canada) at first, since other countries use different toll-free prefixes/lengths (UK, Germany, etc. all differ), so that's really a separate feature.
This seems like it would be a quick win for a lot of users.

Thanks!

[aj3423]

You need to handle the country code being stripped inconsistently (leading +, 0, or 1)

Just improved number parsing, they can now be handled using the regex flag Ignore Country Code, for example:

• +12223334444 -> 2223334444
• 12223334444 -> 2223334444 (this doesn't work in the current apk, it was just improved)
• 02223334444 -> 2223334444

You can try this action build: https://github.com/aj3423/SpamBlocker/actions/runs/35845834328

So with the flag Ignore Country Code, the regex can be simplified to (800|888|877|866|855|844|833).{7}

Since you already have presets for cases like the private/hidden numbers, maybe toll-free could get the same treatment?

Toll-free is country specific, there would be too many entries to add. Such rules are collected on the wiki page. If you want, you can share the regex there.
I'll add the wiki link to the UI right after the last preset, thanks for bringing it up.

[tmastran]

Thanks! Great app BTW!