Scott Miller, Do you mean if you factory/hard reset(1st link below), if you do then yes you will loose all data that was stored on the phone that was not previously save to a different device, SD card,etc.. Check the link below for more info.. There is also a soft reset procedure at the (2nd link) which you will not loose your info./data when performing. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
http://www.hardreset.info/devices/zte/zte-quest-n817/
http://www.hardreset.info/devices/zte/zte-quest-n817/softreset/