I’m a phone expert – millions of iPhone fans buying new model must check ‘list of 6’ first or you’ll waste so much time

A GADGET expert has revealed what you need to do before buying the new iPhone.

If you're planning to upgrade to a new iPhone 15 – or a newly discounted older device – then there are some things you'll want to know.

Gadget fans will be scrambling to pick up the new iPhone models after this week's Apple event.

Four versions of the iPhone 15 launched with upgraded cameras, faster processors, and the powerful new iOS 17 software.

Now Pieter Arntz, a tech expert at cybersecurity firm , has issued six tips for new iPhone buyers to follow.

They'll stop you from wasting your time down the line – and help you avoid a major tech headache.

What to do while you still have old iPhone

The first tip is making sure to transfer your data across.

This will save you so much time, as setting up an iPhone "like new" will ultimately mean you have to transfer the data across in a more piecemeal way.

"You can use Quick Start to transfer information from your old device to your new device. But if you don’t have the new device yet, you can use iCloud to store your data.

To set it up, go to Settings > General > Transfer or Reset > Prepare for New iPhone > Get Started.

Also turn on Backup To Transfer if iCloud Backup is off.

You can then restore from iCloud backup when you get your new iPhone.

Second is unpairing your linked devices.

Pieter recommended unpairing "devices like Apple Watch and headphones".

Thirdly, you should move across any special multi-factor authentication apps across.

"A step which is easily forgotten but very very important is making sure you transfer your account verification apps, like Okta, Google Authenticator, Microsoft 2FA, Authy, etc.)," Pieter explained.

"These instructions can differ per app and are almost never transferred to your new device without requiring additional actions."

Fourth, you should sign out of important apps and services.

"Sign out of iCloud and the App Store on your old device," Pieter said.

"Should you forget to do this before wiping or giving away your device, that is no reason for panic.

"You can use the “Find My” app to remotely erase the device and then remove it from your account."

Fifth, make sure to wipe the gadget completely, especially if you're selling it on.

Just go to Settings > General > Reset > Erase All Content and Settings.

The sixth is removing the iPhone as a trusted device.

Again, only do this once you've transferred everything across, you're signed out and the phone has been factory reset.

Just go to your Settings app on your new iPhone and click on your name at the top, then scroll down to the old device and remove it if it's still there.

"If you're doing an in-store trade-in at Apple, they will help you with this," Pieter added.