Can I start my iPhone back to factory setting without?

Okay, so I want to start my phone all over and wipe out everything. I want to erase everything on it. Will this mess with my phone, like maybe it wouldn't even have a phone number anymore? Because I don't want that.

If you factory reset it, it will just wipe everything out: photos, music, etc. But it will not mess it up, I've factory reset my iPod and iPhone a couple times and they still worked the same way they're supposed to. It will still have a phone number.

Hi, if you don't want anything, then yes do reset it.
It will clear everything from this, remaining contacts detail you can delete by select and delete option.
Now it will be a fresh iphone.

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