The pencil only for ipad &ipad pro: Ipad 2018-2021 9th 8th ,10.2inch 7 th ,6th generation. 2019-2020 Ipad air 4th , 3rd GEN. 2019 Ipad mini 5th Generation. Ipad pro 2018-2020 ,11-12.9 inch 3rd gen. Note: Just work for the above model No, Other model NO are invalid. Please check the correct iPad model before you buy it.