Hanna's Phone

Hanna Marin currently owns a white/gold iPhone 6 in a Aqua and gold Maxboost Vibrance case

Palm Pre #1

 * In Season 1A, Hanna is seen with a Palm Pre.

Palm Pre #2

 * In Episode 12, "Salt Meets Wound", Hanna is seen with a Palm Pre in a case. Hanna is seen with that phone throughout Season 2.

Motorola Bravo
From "Eye of the Beholder" until the end of the Season 2B, after Hanna threw her Palm Pre in the sink, Mona let her borrow her old Motorola Bravo.

iPhone 4S
In the Season 3 and onwards, Hanna is seen with a white iPhone 4S in a pink Incase Bird's Nest case.

In "Miss Me x 100", when Hanna was at The Brew, she gets a text message from someone and also in 'Ravenswood, her phone appears to be black.

In "To Plea or Not to Plea", when Hanna was about to tell Tanner about "A", her phone was hacked and all the A messages were deleted.

iPhone 6
As of the time jump, Hanna has a white/gold iPhone 6 with an aqua and gold Maxboost Vibrance case.

In 7x08 Caleb gives Hanna a replacement phone in a white bird's nest case to avoid A.D/Uber A spying on her.