When you enter your W-2 by taking a picture of it, TurboTax does not keep the picture of the W-2 after the information is entered in your tax return. The picture is not saved on your phone or on the TurboTax computers.

What do you need the W-2s for?   You can print out a copy of your 2018 and 2019 tax returns if you saved them to your computer or if you used TurboTax Online.   You can sign in and scroll down to the bottom of the Tax Home page to print a copy.   The printed tax return will satisfy most financial needs for the W-2.