IPhone not user-replaceable. The iPhone can be charged when connected to a computer for syncing across the included USB to dock connector cable, similar to charging an iPod. Alternatively, a USB to AC adapter (or "wall charger", also included) can be connected to the cable to charge directly from an AC outlet. Some models of the iPhone support wireless charging. Apple runs tests on preproduction units to determine battery life. Apple's website says that the battery life "is designed to retain up to 80% of its original capacity after 400 full charge and discharge cycles", which is comparable to iPod batteries.
JUNQ and IPOD and processing of different kinds of misfolded proteins (e.g. ubiquitinated vs. non-ubiquitinated proteins). Segregation of toxic protein aggregates into JUNQ and IPOD inclusion bodies is a means by which mammalian cells can be rejuvenated through asymmetric division. Thus, the discovery of JUNQ and IPOD provided a new striking perspective of how cells manage misfolded aggregated proteins and gave convincing proof that protein aggregation is a non-random, well regulated and controlled cellular process. Furthermore, the discovery of JUNQ and IPOD suggested that in addition to temporal quality control (i.e. time dependent administration of damaged proteins) cells exploit homeostasis spatially: If degradation