Old Iphone wont turn on

I used to use my Iphone 6s before getting a new phone. since then, the Iphone ran out of battery and has sat in my drawer. i recently started making a scrapbook and i would like to access some old pictures on this iphone, but i cant seem to turn it back on. i never used the cloud so i think the only way for me to access the old photos would be to turn the phone on and send them to my new phone.

Is there any way i can turn the phone on? it isnt damaged at all, just simply hasnt been used for about 12 months. i have tried charging it, pressing and holding the home and lock button, but so far no luck.

Any help would be much appreciated.