Chosen Solution
I have a Model MC 609LL/A Serial JR 135C 48DZZ that needs a new battery. No screws on base. How do I get into it, and how to replace battery.
Apple products initially didnt have; as according to Apple the only people worthy of fixing Apple product was Apple. The device is held together with a strong adhesive thats needs to be softened a heat gun will be required. Prior to attempting anything ensure the phone does not have a warranty on it. You may be able to have it sent to Apple, for repair for free or a free upgrade. If not, there is a repair guide on thsi site for it.