I have a iPhone 6s that all it’s doing is recycling the apple start up screen how do I factory restart

Hey there Elainemcc,

Thanks for reaching out to Apple Support Communities. We're happy to provide some assistance.

The actions in this article can help resolve most issues relating to an iPhone not turning on as expected:

If your iPhone won't turn on or is frozen - Apple Support

We hope this helps.

Have a great day!