Do you need to secure erase a phone before sending back/selling on?

[GregI]

My brother got a Xiaomi Redmi Note 10 Pro last week but unfortunately the screen has a small fault. He's going to send it back but obviously it now has sensitive info on the device.

What's the secure way to wipe a phone these days so no clever clogs can extract data? Is the back up and reset option good enough or should something else be done?

 

[Richie]

A factory reset should be enough these days as android phones all have encrypted storage therefore a wipe removes the keys which should render any data irrecoverable

 

[GregI]

Thanks Richie. Makes sense.

 

[Uhtred]

That reminds me of when I bought a HTC desire years ago which hadn't been factory reset. The chap had pictures of both sides of his credit card!