As you can see in the title, I am trying to trigger the capacitive touchscreen of my iPhone XS but it does not work as intended.

Here first a picture of my Arduino setup (the cardboard represent my iPhone): enter image description here

Here is my code:

void setup()

 void loop()

Here is the model of relay I am using: https://pdf1.alldatasheet.fr/datasheet-pdf/view/1132028/SONGLERELAY/SRD-05VDC-SL-C.html

I Am using Eco Fused copper foil tape.

I tried to follow this tutorial found on internet: https://www.instructables.com/Arduino-Plays-Stick-Hero/

The fact is that If I use a coin (1 centime coin as I live in France), it work kind of from the moment it's scotched with normal scotch but is inconsistent and same if I used a piece of copper tape which have the size of the coin or more bigger one.

But I need to press a little button on an application which require to use a little piece of copper tape but from the moment the scotch seems to be more little than the coin, like for example on the picture, it does not work at all.

Is there a way to get this working on a little zone because when I try to press my phone screen with my finger by applying the less surface possible, I think way less surface than the copper tape on the picture, it work with no problem so I don't really get it.

If someone can help me to fix it, I would really appreciate, maybe I am missing an component !

Have a good day. Thank you.

  • \$\begingroup\$ In your title you say this: trigger capacitive touchscreen of my iPhone XS - so, what has the rest of your question got to do with not being able to trigger your iPhone's screen? Nobody will be interested in selling links on Shamazon - please change the links to data sheets for those modules. \$\endgroup\$ – Andy aka Mar 16 at 18:23
  • \$\begingroup\$ Not all touch screens are created equal. Some use object rejection prevent accidental activation while in your pocket. This usually includes responding only to touches of objects within a specific capacitance range. Some iphones allow you to "tune" the touch response in the settings. 3D touch and haptic touch complicate things even further. \$\endgroup\$ – ScienceGeyser Mar 16 at 19:10
  • \$\begingroup\$ @Andyaka edited \$\endgroup\$ – Simras Mar 16 at 22:29
  • \$\begingroup\$ @ScienceGeyser I will give a shot with an old iPhone 6 that I have and see what's happen, what seems strange is that nobody on the internet said that from the iPhone X for example it does not work anymore due to 3D Touch etc \$\endgroup\$ – Simras Mar 16 at 22:31

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