This is not a rumor, If i did't any official announcement from ENJIN Coin partnership with Samsung S10 crypto smartphone. But i think sumsang confirmed about it below the some confirmation news. S10 mobile lunching but still not available in many countries i waiting for it.
https://www.coindesk.com/enjincoin-crypto-soars-70-percent-on-samsung-partnership-confirmation
https://u.today/enjin-coin-enj-rushes-up-whopping-70-on-partnership-with-samsung