Forgotten SEED, Could you help me?
It is very important to write down your seed phrase with pen and paper (or some other permanent, real-world method of recording it), it is a BIG security risk to store it digitally. Do not ever take a photo of your seed phrase again! 

Unfortunately, if you reset your phone and your photos were deleted , and that was the only copy of the seed (I'm assuming no cloud backup), then you may have lost your bitcoins. Your only hope is to somehow recover the deleted photo from your phone, but this may be very difficult/impossible to do. 

Best of luck