Is there any way to detect whether a device has a case and screen protector on it?

Question

I know this might be a stupid question, but can we detect whether an iPhone device has a case and screen protector on it in code?

score 4 · Answer 1 · answered Mar 21 '19 at 22:24

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Enable the microphone and then vibrate the device. If you have a baseline idea of how the audio frequency looks without a bumper, then you can diff that against what you record.

Typically, the cases are made out of materials like silicone that reduce the intensity of the vibration sound.

answered Mar 21 '19 at 22:24

CodeBender

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Interesting idea, I imagine this works best when the phone is on a hard surface but not so well if held in hand – Joni Mar 21 '19 at 23:13
@Joni Definitely a valid point, since users do tend to hold their phones. – CodeBender Mar 21 '19 at 23:53

score 1 · Answer 2 · answered Mar 21 '19 at 22:18

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I don’t think so. Screen protectors and cases are made with sensors in mind, so they don’t interfere with proximity sensors cameras, or microphones, which I think is the only way we have to know if there’s something on the phone.

Battery cases, or lightning accessories are something else though, but I don’t think you are talking about those.

answered Mar 21 '19 at 22:18

Renzo Tissoni

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I am trying if I can get something different from 3D touch events, but it looks all data is the same with or without screen protector..... – Yibin Feng Mar 22 '19 at 04:12
3DTouch registers from a specific pressure. I think it would take the user a bit more force to press the screen with a screen protector on, but 3DTouch wouldn't really care about it. – Renzo Tissoni Mar 22 '19 at 13:04

Is there any way to detect whether a device has a case and screen protector on it?

2 Answers2