Samsung, like Apple, seeks new sources for chips as supply constraints hit the Korean manufacturer18
The sources say that they see Samsung continuing to buy chips from Japanese firms while in-house production goes straight to Galaxy smartphones or tablets. This means that the Japanese purchased parts are being sent out for non-Samsung devices. With the way that Samsung Galaxy models are selling, it sounds like Samsung will soon be needing additional chips which is why there is speculation the company will turn to Elpida Memory for mobile DRAM chips and Toshiba for eMMC devices.
Considering that this information is coming from those anonymous "industry sources" we suggest a little skepticism while you process this information.