I'm 15 and don't have a cellphone?

I will ask my aunt to buy me a cellphone, but I'm scared if she will decline me. Btw, i don't have a tablet, iphone, and my own electrenic devices also. I want to save money, but my parents won't let me. My aunt hasn't given me my birthday present and my christmas gift, so I figured out that this might work. I'm a bit jealous because my cousins who are 12-year old and 10-year old has a tablet given by our aunt. Do you think having good grades will help me convince my aunt about the phone? I have straight A's so far. Any advice? I'll appreciate it.

Go buy one yourself

Well the worst she can say is no. If that does happen, you can try to apply to jobs. As a 15 year old myself, I know getting a job under 16 is difficult, but ice cream places usually hire very young. And yes, having good grades could help.

Offer to do extra chores for free in exchange for the cellphone

You don't need one

No child does. You can't buy one since they don't allow minors to buy them since you can't enter the contact required and your parents will just take it away since you can't own anything