I tried but could not enter developer mode. My smartphone is Samsung s9 + so what is the error?
Hope this helps: https://thedroidguy.com/2019/01/how-to-enable-developer-mode-on-galaxy-s9-and-s9-1086865
Please note, this is a forum for supporting development with Couchbase. It is not normally possible to assist with questions outside of that scope. If you need further help with this, there are many Android-specific support forums available.