Sierra's smartphone

Sierra's Smartphone is a pink-cased smartphone owned by Sierra. While she makes no secret of her addiction to technology, currently its only appearing season is Total Drama All-Stars. It allows her to continue updating her fan blogs while competing, as well as view photos of Cody. It features an image of an embarrassed Cody in the shower trying to cover himself as the wallpaper.

Opening sequence
Sierra pops up between Mike and Zoey as they are about to kiss and snaps a picture. The two cover their eyes from the flash and turn away.

Heroes vs. Villains
Sierra uses it to take a photo of the Flush of Shame.

Evil Dread
Sierra annoys Courtney by taking a photo of her while she's asleep. The former explains in the confessional how she smuggled it in due to experiencing internet withdrawal last time she competed. Sierra believes her move to be for the best, as she can keep her blogs current and not be far from Cody.

She types the following update into her phone: "Zoey's even sweeter than she is on TV. Courtney is even...Courtney-er than ever."

Saving Private Leechball
As she gets ready for bed, she places the phone on the pillow and covers it with the blanket. After kissing it good night, Sierra herself falls asleep in the shape of a ball at the end. Courtney calls her a "weirdo" in response.

Food Fright
During the Heroic Hamsters' welcome party for Duncan, Sierra eagerly rushes off to get her phone to take a picture. She is despaired to find out that it's been broken. A flashback reveals that the previous night, Mal snuck into the girls' side of the hotel and crushed it with his hand. Later, in the confessional, Sierra holds her phone to her face while gushing over Cameron. She states that she's going to "Twert" something, in the process revealing she brought tape for "emergency repairs."

Moon Madness
Sierra is struggling to cope with her loss. She observes that "her hand looks so weird without her phone." She even begins questioning her existence.

Suckers Punched
Duncan mentions the phone during a conversation with Zoey, listing all of the things he suspects Mal of breaking.

Trivia

 * Sierra's phone is one of four electronic devices belonging to a contestant that appears on Total Drama. The others are Courtney's PDA, Dakota's cell phone, and Sam's GameGuy.
 * Sierra's phone ultimately causes her elimination. After Mal destroys it, her hold on sanity continues to slip further as she advances in the competition. This is most likely the reason the Villainous Vultures vote her off, as evidenced by Cameron's final statement about Cody needing her.