When dealing with pre-owned or internationally sourced iPhones, the first step is to understand how to obtain information about the activation and warranty dates. If you're unfamiliar with the process, follow along with Mytour's guide below!

To check details about your iPhone's activation date and warranty, you need to log in to the iCloud account on that device so the data can be sent to Apple's servers.
Step 1: Open your web browser and visit Apple's My Support webpage.
https://idmsa.apple.com/IDMSWebAuth/signin?appIdKey

Step 2: After logging into your iPhone's Apple ID account, details about devices that have logged into iCloud will appear, as shown below. Now, simply select the phone model to check the information. Let's start by examining the iPhone 5S.

Step 3: Once you click on the iPhone as shown in the image, you'll see the obscured Serial number, and below that, information about the purchase date under Date of Purchase, shown in the picture as December 17, 2013.

We'll continue our verification journey with the iPad Mini 4, purchased on January 23, 2017.

Through these straightforward steps, you can accurately check the activation and warranty status of your iPhone. Wishing you all the best in your endeavors!