Apple CEO Tim Cook released a public letter the other day explaining why Apple will not comply with the court order to assist the FBI in decrypting the phone.
In the letter he alluded that a backdoor to the Iphone would be something that is too dangerous to create. Apple would basically have to create an update for the phone that would remove or disable the passcode. Creating such an operating system would mean that operating system could be used on ALL iphones and no ones person information would be safe.