These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: One Missed Call
Adult Fear: Your youngest child keeps having nasty accidents, to the point where you're under investigation for suspected child abuse. You walk into your children's room to discover that your eldest daughter has been the one abusing her sister all along. You lock your eldest child in her room as you rush your younger daughter to the hospital, only for your eldest daughter to suffer an asthma attack and die, but not before trying to call you for help. Oh, and then the curse generated by what happened kills you, leaving your youngest child alone in the world and traumatised
Narm: the movie, but especially the trailer. It's unintentionally hilarious, with an ominous announcer voice saying "When your call goes straight to voicemail, your world goes straight to Hell." Bonus points for the victim-to-be saying "That's not my ringtone." in a terrified almost-whisper.
An exorcism being performed on a cell phone.
The incredible CGI Demon Baby Holding a Cell Phone.
The Woobie: Laurel Layton, who was being abused by her sister. Also, Marie Layton, who was suspected of being behind the abuse of Laurel, discovered her elder daughter Ellie was the true culprit, locked Ellie in her bedroom not knowing she would suffocate and die from an asthma attack, was the first victim of the curse when she burned to death, died still suspected of being an abusive mother, left her youngest daughter alone and having to go into care, something she had tried to prevent by searching for the real cause of the abuse, and didn't have her body found for months. And then when she's found, her body WEEPS as it crawls towards Beth before protecting her. She later returns to protect Beth again, but then Andrews' phone starts to ring at the end of the film, meaning either her sacrifice was for nothing or her ordeal still isn't over.