Apple warns all iPhone owners to never make ’sell’ mistake – it’s too dangerous

IF you ever plan on selling your iPhone, Apple has some serious advice for you.

Ignoring it is dangerous and could leave you exposed.

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An official Apple memo details all the steps you need to take before selling or giving away an iPhone or iPad.

The very first step is transferring info to your own device – but don’t manually delete items from your old one.

“You shouldn’t manually delete your contacts, calendars, reminders, documents, photos or any other iCloud information while you’re signed in to iCloud with your Apple ID,” Apple warned.

“This would delete your content from the iCloud servers and any of your devices signed in to iCloud.”

First, back up your device using iCloud.

Activate Wi-Fi then go to Settings > Your Name > iCloud > iCloud Backup.

Then tap Back Up Now and stay connected to Wi-Fi until the process is finished.

Once you’ve got your content backed up or saved on a new device, you’ll need to wipe your old one.

Sign out of iCloud and the App Store, and if you’re switching to a non-Apple phone (like an Android), de-register iMessage.

To de-register iMessage, go to Settings > Messages and turn off iMessage.

Now go to Settings > General > Transfer or Reset Device > Erase All Content and Settings.

Finally remove your old device from your list of Trusted Devices.

To find your Trusted Devices, go to Settings > Your Name and then scroll down.

You’ll be able to tap on individual Trusted Devices, and then remove them if you need to.

If you don’t follow these steps, the new owner may be able to access some or all of your private information.