Should I get my daughter the Microsoft Lumia 640 for her birthday?

She's 11 years old, and approaching 12. She's asked for the Microsoft Lumia 640 for her birthday. She doesn't play many games apart from temple run, so the small app store isn't a problem. The only issue I have is whether the screen will be too big for her hands-she does have very long fingers though.
Thanks in advance!

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