Real Phone Box:

1. Copy the files from the folder x64c.rpf in:
x64c.rpf\levels\gta5\props\lev_des\p_v_lev_des_skin.rpf\

2. Copy the files from the folder x64h.rpf in:
x64h.rpf\levels\gta5\props\roadside\v_utility.rpf\