The flash brightens up and down ... But not the center of the picture .. So unusable in low light .. iCoyote does not recognize the GSM impossible to run this application over ... Pity me that wanted a good solid gsm ... Too bad that it is so big ... a bit impossible to put in the pocket of his jeans .. And colorimetry is not that the faithful ... I did a lot of pictures. Otherwise :-( gsm reactive solid, well ... I came to a samsung s5 which ultimately did not cost my bcp more expensive .. And higher has many levels. You just lette him a good protective shell :-)