Apple MC319LL/A Information Guide - Page 6

Airplane mode is on, you cannot make or receive calls or use features that require wireless communication. Under some conditions, certain accessories may affect iPhone wireless performance. Reorienting or relocating iPhone and the connected accessory may improve wireless performance. Keeping iPhone Within Acceptable Temperatures iPhone is designed to be operated in temperatures between 0º and 35º C (32º to 95º F) and stored in temperatures between -20º and 45º C (-4º to 113º F). Low- or high-temperature conditions might temporarily shorten battery life or cause iPhone to temporarily stop working properly. Leaving iPhone in a parked vehicle or in direct sunlight can cause iPhone to exceed these storage or operating temperature ranges. Avoid dramatic changes in temperature or humidity when using iPhone as condensation may form on or within iPhone. When you're using iPhone or charging the battery, it is normal for iPhone to get warm. The exterior of iPhone functions as a cooling surface that transfers heat from inside the unit to the cooler air outside. Exposure to Radio Frequency Energy iPhone transmits and receives radio frequency (RF) energy through its antennas. The iPhone cellular antennas are located at the top and bottom edges of iPhone. The Wi-Fi and Bluetooth® antenna is located near the top of iPhone. iPhone is designed and manufactured to comply with the limits for exposure to RF energy set by international regulatory agencies, including the FCC of the United States, IC of Canada, MIC of Japan, and the Counsel of the European Union, among others. "Specific Absorption Rate," or SAR, refers to the rate at which the body absorbs RF energy. The SAR limits for mobile phones are 1.6 watts per kilogram (W/kg) for the FCC and IC, and 2.0 W/kg for the Council of the European Union. iPhone has been tested,1 and meets the FCC, IC, and European Union RF exposure guidelines for cellular, Wi-Fi, and Bluetooth operation. During SAR testing, iPhone is held in standard operating positions (i.e., at the head and on the body) and its radios are set to transmit at the highest power level. iPhone's maximum SAR levels on each frequency of operation are provided in a chart at the end of this section. The SAR levels experienced during normal use may be lower than the maximum SAR levels. In normal use, iPhone automatically adjusts radio transmission power to the lowest level necessary to communicate with the wireless network. When carrying iPhone, keep it 1.5 cm (5/8 inch) or more away from your body to ensure exposure levels remain at or below the maximum levels. Avoid cases with metal parts. 1 The device was tested according to measurement standards and procedures specified in FCC OET Bulletin 65, Supplement C (Edition 01-01) and IEEE 1528-2003, and Canada RSS 102, Issue 4, March 2010. iPhone adheres to the European Council Recommendation of 12 July 1999 on the Limitation of Exposure of the General Public to Electromagnetic Fields [1999/519/EC].