Apple iPhone 4 Support

So, I am wondering when Apple stopped supporting the iPhone 4 and where could I find some sort of official information about that.

A local law enforcement agency has charged me with posting a photo of one of them on X in what they’re calling an intimidating manner. It’s of course just a way to discourage people from legally photographing them. They’re saying I did this with my iPhone 4, which they seized. Now, from my understanding, the iPhone hasn’t been supported in I think in 10 years, including it’s Safari web browser and Twitter was never installed on there. But I need to show that to a judge. Charges will end no doubt being dismissed, but I need to be prepared.

Thanks in advance.