Reports from Korea say that Samsung is talking about using an LCD display in the upcoming Galaxy S5 and Galaxy Note 4 mobile phones - mostly in an attempt to reduce costs. Samsung is facing competition from lower-cost Android phones and need to lower the cost of their phones.
Samsung started adopting AMOLED displays in their high-end mobile phones years ago, but whenever people start discussing the next one, there are always rumors that they will switch back to LCD. It happened with the Note 3 and with the GS4. As we know, both phones use Super AMOLED panels.