Apple iPhone 3GS is a very nice mobile and at this time tis price is $199 approx in markets. Its battery is standard,Li-Ion Stand-by time is Up to 300 h, Talk time limit is Up to 10 h, Music play time is Up to 24 h. About its mail attachment support it supports .jpg, .tiff, .gif,.doc and .docx (Microsoft Word), .htm and .html (web pages); .key (Keynote), .pdf, .ppt and .ppt, .txt (text), .rtf, .xls and .xlsx. Some Environmental Specifiations for this mobile: Operating temperature: 32° to 95° F (0° to 35° C) Nonoperating temperature: -4° to 113° F (-20° to 45° C) Relative humidity: 5% to 95% noncondensing Maximum operating altitude: 10,000 feet (3000 m) It supports different types of languages for Keypad and dictionary. And a lot of applications are available and sound system if this mobile with clear picture quality its a very nice mobile phone.