Hello. New 3GS User here. As of now. My standby time is 15hours. Usage is 28minutes. On the percentage meter, it shows 95%. However, inside my memoryinfo app it shows 92%. Which one should I trust? What should I do now? Recalibrate the battery or what? I did my first charge of about 4-5hours. So should I let the phone run down till the battery is drained completely? Please help.