What’s New in iOS 11.1 Beta 5: Crazy Calculator Bug Still Exists for Adding 1+2+3 [VIDEO]
iOS 11 has a really weird bug in the Calculator app, when you try to calculate 1+2+3 as it provides the answer 24. Wait, what?

Yes, give this a try yourself by trying to add 1 + 2 + 3 in the Calculator app. You don’t even need to tap too quickly, and what you’ll get is the answer of 24. How? It appears the slow animation of the “+” sign lags, thus causing the user entry of 1 + 23 = 24.
Check out our screen recording of the bug below, first seen on Reddit:
Also, here’s what’s new in iOS 11.1 beta 5, released earlier today (not a whole lot), as per EverythingApplePro:
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RIP the old Apple.
I have given up using the iPhone calculator for a while now. This kind of error also appeared in previous iOS versions, but is even worse now. I would NEVER use it for calculating my students’ marks.
1 + 2 + 3 = 24 = A+
Lol
I use Calcbot. So much nicer than the built-in calculator, especially because you can go back and correct the equation if you see that you messed it up.
That sounds useful, thanks for the tip. I’ve been using the built in calculator on my old Moto X when marking.
Yeah, they have a ticker-tape thing that runs along the top that you can scroll through to see all of your past calculations, like a banking calculator. Although it’s better than a banking calculator in that you can copy results from them and use them in your current calculation, and as I said earlier you can delete mistakes (which is really nice if you’re 30 numbers in to a calculation and you make a typo). There’s also built-in unit conversions for almost any type of conversion you can think of. It’s a pretty great app.
Mine seems to work normal, 1+2+3=6
this is not a bug… if you slow down the vid, you can see when typing fast, the + doesn’t have time to eliminate, so its essentially calculating 1+23…
Which is basically a bug…
Following my comment above, I submitted a scathing bug report/feedback via the Apple feedback page. This bug is totally unacceptable, especially since there’s no way to point the Control Center shortcut to a better calculator app.
I confirm it happens on my 6S running iOS 11. It does NOT happen under an older 4S that I keep around that’s running iOS 9.
If users couldn’t enter another key before the pointless plus key animation was finished, that would be a annoyance, a major one actually, but not a bug.
But when users have to slow down their typing lest the wrong sequence of keys gets registered… it is absolutely, 100% a bug.
what would it eliminate
iPhone can do facial recognition in the millionth of a second and animate a poop emoji and yet miscalculate 1 + 2 + 3!! Regardless of whether this is a lagging problem or otherwise, this is completely unacceptable! I can’t trust the calculator app anymore! Shame on you Apple!
In the video, I love that he never really did it “really slow” on the calculator, every time was actually pretty fast. 😛 To be fair, he didn’t notice button glow to attribute the bug to that.
The bug happens in any combination: 1-2-3, 1x2x3, etc doesnt have to be 1,2,3 either, it freezes after the second number. Hope they fix that soon, until then this is one reason I use CalcTape – shows a list of what you’ve typed in.
This bug can also be found in iOS 10.3.3 by adding 1+4+7 = 48.
Or any combo of “1 + any 2 single digits”
This is why I deleted the stock calculator and installed PCalc. Even got into the Beta group for it.