Asus ZenFone 2 is the first phone with 4 GB RAM - PhoneArena
Asus Zenfone 2 ZE551ML red colour 4GB RAM Review
Asus ZenFone 2 Review - Tom's Hardware | Tom's Hardware
Asus now has a $229 ZenFone 2 variant with 4GB RAM
ASUS ZenFone 2 ZE551ML 4GB RAM 128GB ROM Smartphone Intel Atom Quad Core CPU 5.5" Z3590 FHD International 4G Mobile Phones|4gb ram|stock smartphonequad core - AliExpress