A:AnswerHi, Fatmamakat.
This Wall Charger is not compatible with your Galaxy J7. Your phone required a micro USB charger, not a USB Type-C.
Cesar G. - Insignia Support
A:AnswerHi Barbie.
This is for certain USB Type-C computers and Laptops. This model (NS-P11A8100) uses Micro USB. Please use our charger model NS-AC1U2M.
Charles V. - Insignia Support
https://www.insigniaproducts.com/contact-us
A:AnswerHi, Bethany.
Thank you for letting us know about your inquiry. This Wall Charger can definitely work with your Insignia tablet.
Alexander G. - Insignia Support
A:AnswerHi, Chloe.
Thank you for letting us know about your inquiry. This Wall Charger works with any Type-C plug-in product. In order to verify the exact compatibility with your device I recommend to contact the manufacturer.
Alexander G. - Insignia Support