Altho' I despise Apple as a bunch of tax dodging, illegal price maintaining corporate sharks of the worst order, The Ancient House has a number of their products.
If you feel so badly about Apple why buy their products? Strange. Obviously Apple must be doing something right because they don't need to discount their products to sell them unlike other operating systems do. Customers queing all hours to get their hands on the latest Apple product. Not many companies can boast that. Yes you pay extra but get a quality product.
Back on track iTunes is the key when updating your Apple product. Perhaps your iPhone is jailbroken and therefore become unstable. You don't give any other details in order to help.