Back button not working

[lvglvg]

Since few days back button not working properly and I have to use home button , please advise .

Thank you very much 

[MR_PRIME · Accepted solution]

Do a factory rest buddy. Nd if prblm get resolved then Great if not may be it's Hardware related issue.

Plz accept solution clicking on three dot right side

[lvglvg]

Factory reset is done but not resolved , may hardware problem, required to repair, thank you for good advise.

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your query, we would request you kindly visit the service center and inspect your device with the technical team end, they will provide you with all the information in a better way after inspecting the device physically.

You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support