If I put my old SIM card into my new iPhone will everything still remain the same?

I just want my number to stay the same and my tariff/package that I pay for every month to stay the same? Need a bit advice, I currently have an iPhone 6s at the moment. I'm not too fussed about keeping all my photos etc cos tbh most of them are on Facebook but as long as my number and monthly package stays the same that's all I'm bothered about

The SIM card has nothing to do with photos or videos, it's simply a chip that lets your phone communicate with your service provider. All of your photos and settings will remain exactly the same.