How to get my pictures on our old htc to my new iphone?

I've already tries to download it to my computer and then put it on my iPhone but it won't work.

Bluetooth them

Then you are doing it wrong… HTC to computer via USB MAss storage mode… Toss HTC away… Hook up iphone… Open itunes… Dump photos into itunes OR dump it into Icloud… Sync with Iphone… Issue resolved… Tons of yourtubes videos showing you steps

there's also email and bluetooth