They have another choice, to pay to have a new battery fitted, I wonder how many people have bought newer models of phone when their existing one ran slowly because no one told them that replacing the battery at a cost of $79 would restore their phones to the original speed that they are capable of, maybe thats why Apple have kept quiet about this until now, they certainly make more profit from someone buying a new phone compared to the profit they would make from the customer paying to have a new battery fitted. Most people know batteries have a finite life and degrade over time, and even the small print on apples tech spec web pages for the phones say so, for example, "All battery claims depend on network configuration and many other factors; actual results will vary. Battery has limited recharge cycles and may eventually need to be replaced by an Apple service provider. Battery life and charge cycles vary by use and settings. See www.apple.com/uk/batteries and www.apple.com/uk/iphone/battery.html for more information.", but they do not mention that the phone will run slower with a degraded battery.Exactly. I agree with those saying that Apple should notify users of the reduced performance they may experience while being throttled, but quite a few people here don't seem to understand that their choices with a degraded battery are a phone that randomly shuts off or a phone that runs slower. Lithium ion batteries suck, issues like this remind us of that fact.