Slow as Molasses iphone?

I love my iphone, but recently it has seemed as if someone has poured a bottle of thick syrup over it, because its response to everything is just SO SLOW.
After some research, I found this tip – which worked wonders!

Here it is:

Go to Settings -> General -> Spotlight Search. UNCHECK everything you don’t need. I unchecked everything except Email, Messages, Phone, Safari and a few other essentials. This will prevent the phone from indexing unnecessary stuff in the background, which reduces memory and can increase processor usage. In my case, it did just the trick!