The rear camera module on your Xiaomi Redmi 9C is perfectly safe with this tempered glass protective lens.
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Screen Protector Xiaomi Redmi 9c Full Screen - 4-in-1 Xiaomi Redmi 9c Glass - Aliexpress
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CTEL Tempered Glass for Redmi 9c(Black) ultra clear zero bubbles sensitive touch 9h hardness anti-scratch edge to edge mobile screen protector with Dry and Wet Wipes : : Electronics
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