Although we heard about a Vivo handset with 10 GB of memory in the first part of the year, that device still has to hit the market. In the meantime, the OPPO Find X with the same impressive amount of memory has surfaced on TENAA. Now, all that remains to see is which one of them hits the market first.
https://www.notebookcheck.net/OPPO-Find-X-with-10-GB-of-memory-hits-TENAA.335910.0.html