15 Amazing secret hidden key features in all smartphones

All  are having  a  smartphone in their pocket, but some people know about the hidden features available in smartphone  by  pressing  some  key combinations. There are  so many of these codes, some of them work with all the  smartphones, others and will work only  few models .

For  more get the  details  of  code  watch  the  video  till  the  end.

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