I can't send photos from my iPhones via Airdrop, what should I do?

Question

iPhone

I bought an iPhone 6, before that it was 5. They were on the same Apple ID, when I turned on the new iPhone, I restored a copy of iCloud so as not to lose data, everything was fine. I wanted to send photos via airdrop, but they do not find each other. At the same time, with other iPhones everything works fine. With what it can be connected? I would be very grateful for an answer