I read somewhere that u need to take printouts of photos . not really sure

print out pictures of you both and as per i heard that you can’t take your phone with you inside interview hall

You cannot use your phone during your interview. So, you need to PRINT copies of the pictures that you have with your wife. You can print anything you have together, such as joint bank accounts, same name on bills, etc. Anything that will prove your relationship.

yes print out pictures, text , emails if you ever sent flowers receipt if you ever traveled

you can upload it on your ceac account and the CO before your interview will see it and you can printed out and bring it with you at the interview

thank you guys so much!