Where Can I Find My Phone’s Serial Number? The serial number of a phone can be located on the sticker underneath the battery. Updated on October 8, 2017 Tagged: esnnumberphoneserialsn Was this article helpful? Yes No Related Articles How Do I Uninstall Jailbreaking Software From An iPhone? Can I Unlock A Jailbroken iPhone? Where Can I Find The PRD For A BlackBerry? Where Can I Find The Alcatel Provider ID? How To Locate Alcatel SRO What Information Do I Need To Unlock My Phone?