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It may cause abnormality of proximity function if the film or protector covers the proximity sensor area.
But we can not guarantee that the specs are 100% correct.
If we compare phone specs of Upcoming with the specs of Samsung, Huawei, Vivo, Sony, LG, HTC, Xiaomi, ZTE, Infinix, Lenovo or Apple-iPhone we find some similarities or differences between.
The high resolution and pixel density per inch complement the high screen rating.
This is also known as "single sign on".