How can I exchange my old iPhone for a new iPhone from Apple company?

According to Apple's most recent explanations, you can use the Apple Trade In program, which is renowned for providing favorable value for your old device, to replace your old iPhone with a new one from Apple. Here is a step-by-step instruction sheet:
• Determine potential savings in Step 1
Get a trade-in estimate for your current device to start.
Add your trade-in device to your order after choosing the desired new Apple product.
Complete the checkout procedure.
• Step 2: Get ready to trade in your device
You will get an email from Apple confirming the trade-in estimate.
Follow the directions in the email to back up your personal data and get ready to trade in your device.
• Step 3: Decide how to send your device back.
Your old device can be returned in one of two ways: by mail or by dropping it off at an Apple Store.
You will receive a refund for the value of your old device, which can then be used to pay for your new one.
You also have the option of receiving this value on a flexible Apple Gift Card.