Erase old iphone

Yes, especially if you followed the instructions listed in: What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support

It would have really helped had you listed all of the steps that you took to erase your iPhone. Reading your brief post tells me that you may have erased your iPhone.

When the iPhone was set up as new then were you brought to the HELLO screen?

Axel F.

Axel Foley said it well.

Andre2011 wrote:

I tried to erase my old iphone 7.

Perhaps this really means “I thought about erasing my iPhone.”

Then it asked about setting up new.

Perhaps this means “After I thought about it, I had a vision I would be asked about setting up [as] new.”

The Hello screen is not necessarily the marker that confirms that the iPhone was either erased or set up as new. Lately, even when one installs a major iOS update version then you are taken to the Hello screen.

You stated that you got to the Hello Screen. Good. Are all your previously installed apps gone? Photos gone? Music? If YES then you have erased your iPhone.

Axel F.