How do you put ice on your phone?

Could you please elaborate on the process of placing ice on a phone? I'm genuinely curious about the steps involved in this unusual task. Would it be necessary to wrap the ice in something to prevent direct contact with the phone's surface? Or is there a specific method for safely applying ice to a phone? I'm also wondering if there are any potential risks or concerns associated with this practice. Would it damage the phone in any way? Your detailed explanation would be greatly appreciated.