AITA for giving hand me downs to my younger child?

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The original was posted on /r/amitheasshole by /u/Extra-Whole6039 on 2023-07-27 15:57:45+00:00.

I have 2 children aged 17M and 14F. I bought a phone for my son when he was 13 however now that he is going to college soon he needs a new one also he told me that some of his classmates have been mocking him about his old phone so I decided to buy a new phone for him and give his old phone to my daughter.

she is not happy about it and threw a tantrum when she found out. I was talking to my friend about this and he thinks I was the asshole