How can I get my mom's old phone?

My mom bought an iPhone 8 plus about two months ago. However, she had to switch carrier companies so she had to buy a new phone because the iPhone 8 wasn't "compatible" with that company. She still has the iPhone 8 but she doesn't use it at all. I currently have the iPhone SE, it works but it's just too small for my hands and I would like something bigger. I tried asking my mom for her "old" phone but she won't give it up. Any tips?

Added (1). PS- I'm only 14

Offer to buy it for the going rate, or buy your own.

Ask her why she won't give it up, and show her the error in her ways.

  • Why does mom get cell phone service in the mountains and I don't? She has the LG 6G and i have the iPhone 7 plus. We both have Verizon and we're on the same plan. But we will be in the mountains and she get's service and I don't. Why is that?
  • My mom tracks my phone using Find my iPhone. I need to go somewhere without them knowing. Is there any way to freeze or change my location? I'm 19, have my own car, pay for my phone myself, and go to college 4 hours from home. I need to go home and back this weekend without my parents knowing because they are very critical and judgemental of me going home so often. I don't want to leave my phone at my college dorm because I may need it on my 8 hour drive, and I would rather not jailbreak my phone but am open to that if there's no other option.
  • My mom stole my phone. Can I call the police So here s the story I got into a fight with my brother all the way back in April and then my mom came over to my grandma s house where I live and snatch my iPhone out of my hand now she has refused to give it back and she won't even give it back to my grandmother my mom doesn't own the phone in her name so I'm wondering if I could call the police and see if I could get the phone back then
  • My mom and i got the same phone and same plan yet her internet loads all the time and mine never does? Two iPhone 7+. Same unlimited data plan. Yet literally no matter where I'm, nothing that uses data loads unless I'm connected to Wi-Fi. Yet my mom's internet loads no matter where she is. It's even happened that we're in the same place trying to load the same thing and hers loads while mine doesn't. Yes, I have my data turned on. I've made sure all my data settings are identical to my mom's. So i really don't know what could be causing this.