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iOS 11.2: Calculator bug 1+2+3=234

22 points by vijaysr ↗ HN
I was able to reproduce calculator bug on iOS 11.2 on an iPhone SE. See a short video in link for demonstration. I used only one finger to tap. I was able to reproduce it multiple times.

https://www.dropbox.com/s/rurojjf0bwjvuih/File%20Dec%2003%2C%208%2032%2028%20AM.mov?dl=0

8 comments

[ 2.7 ms ] story [ 29.4 ms ] thread
arooaroo
Wow. I’m just trying to do 1+2+3= and I’m consistently getting 24.
mbell
It's a UI bug, if you type fast it misses a `+` input so is performing 1 + 23.
jonmagic
I’m getting the same on 11.1.2
graeme
Also occurs for me on 11.1.2
lambada
I can get 1 + 2 + 3 = 24. That appears to be because the second '+' action doesn't register if it's still doing its click animation.

I cannot reproduce 234 though.

jmkni
I don't think this is new, I remember it being mentioned on Reddit earlier this year
teilo
This was a problem on all iPhones until 11.2. On my 7+ the problem went away on 11.2, and no matter how fast I tap buttons, I get 6.

If you hit the buttons more slowly, it will register correctly. It shouldn't happen on any phone, though, and it is ridiculous that the problem is still around 2 major revisions later.