How to update your iphone without deleting apps to make space?

Well i want to Update my iPhone 4 to iOS 7.0 but it says "This update can't be installed because it requires at least 3.7 GB of storage… " i almost deleted everything on my phone & it still hasn't gone through. I want to jailbreak it but i don't think that will work?

Buy an android. IPhones are for snotty teenagers, hipsters, and old people who think they are cool. Android is much better, way more options, and has features that iPhone MIGHT have in 2-3 years after they have gouged you for an additional $1800 ($600 per year x 3 years.)