Currently, Emily Fields owns an iPhone 6 Plus
Microsoft Kin Two
From the Season 1A to 1B, Emily owned a Microsoft Kin Two.
From Season 3B and onwards, Emily has owned a black iPhone 4S in a purple case. In
To Plea or Not to Plea, When Hanna was arrested, A hacked into Emily & Aria's phones and deleted all the A texts, so there wasn't proof to get Hanna out.
Samsung Galaxy S6
In "Of Late I Think of Rosewood" Emily is seen with a Samsung Galaxy S6
iPhone 6 Plus
After Charlotte's Assailant runs over her Samsung, Emily is later shown with an iPhone 6 Plus with a white case
In Hush Hush, Sweet Liars, Emily is seen with a Gold Apple Watch Edition with Milanese Loop Band and sometimes a white band