how to tell how many gb my iphone is without turning it on?
['STEP 1: Browse to SETTINGS > GENERAL > ABOUT.', 'STEP 2: Scroll down to CAPACITY.', 'STEP 1: Browse to SETTINGS > GENERAL > [DEVICE] STORAGE.', 'STEP 2: Look toward the top right to find the available and total capacity (for example, 56 GB of 512 GB Used)']