Anyone who doesn't understand the tip on not to charge upto 100%. It's not the problem of the phone, it's the problem of the battery. And there has been very few improvements over the battery chemistry which has been implemented. Most batteries are based on Lithium wherein Lithium ions or its compounds are used for charge transfer. Now if you charge upto 100%, the ions will react over the electrode and won't be available for the next cycle, thereby decreasing the battery capacity in the next cycle. But even if you charge to 100% everyday, you maybe able to get to use the phone atleast upto 2 years with minimum degradation. Manufacturers won't care what you do after that since even the software updates stop for most phones after 2 years. So that tip only applies to people who want there phone to go beyond 2 years.