I really want an iPhone badly?

I'm in 7th grade and I really want an iPhone! EVERYONE HAS ONE! And I'm not even joking its embarrassing when i go to parties and just hang out after school with my little flip phone! I have been begging my parents for over 2 years! But there's one little thing… I don't have the best grades. So I really want one buy my parents say when I get good grades then i can get one! But i have tried to raise my grades i really have and. Nothing i still get the same freaking grades! Everyone has one and everyone has an instagram and i also want to connect with my friends from my camp so i could face time them and like i said before its EMBARRASSING! So someone please help! Thanks.
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And also my parents say that money does not matter and after trying really hard i got the same grades because i got worried before tests i was thinking about like after this if i do well i could get an iPhone! But then i would just blank out!

Stop being so spoilt and suck it up.

That just means you aren't studying hard enough. If you were putting the time in every night to study then your grades would be higher.

Quit whining & work harder in school.

You should get a tutor and sense money does not matter you can get a reliable one. Make an initiative to have the things you desire. On the subjects you're really good at try asking for extra credit and maybe the work won't seem so tiring and boring. Also try asking for another phone that's less expensive like an android. You can face time on those and they have apps like instagram and facebook.

Maybe you should ask your teachers for help or get a tutor, I know sometimes school can be hard and all it takes is a little more effort and some help. I was struggling in Algebra (I'm a freshman in high school) and I states after school two days every week and my grades have started improving. Maybe ask your parents to get a tutor for you or something. Just show your parents how responsible you can be and maybe they'll get you one.