home button gets stiff after a heating task

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Hello HAAF_dEVL,

You’ve come to the right place. We’re here for you and want to do all we can to help you.

We recommend trying to clean your Home Button to ensure it is free of any debris.

"Clean your iPhone immediately if it comes in contact with anything that might cause stains or other damage — for example, dirt or sand, ink, makeup, soap, detergent, acids or acidic foods, or lotions. Follow these guidelines:

• Unplug all cables and turn off your iPhone.
• Use a soft, slightly damp, lint-free cloth — for example, a lens cloth.
• Avoid getting moisture in openings.
• Don’t use cleaning products or compressed air.

Your iPhone has a fingerprint-resistant oleophobic — oil repellent — coating. On iPhone 8 and later, the coating is on the front and back. This coating wears over time with normal use. Cleaning products and abrasive materials will further diminish the coating and might scratch your iPhone."

More information on how to clean your iPhone can be found here: Cleaning your iPhone

Let us know if you have any questions.

Thank you for using Apple Support Communities.

Take care!

It's not a physical button. It's a sensor that acts like a button, but it doesn't actually move.

Make an appointment at the Genius Bar of your local Apple Store.