184 4A. Important Safety InformationBoost further suggests you experiment with multiple phones(even those not labeled M3/T3 or M4/T4) while in the store tofind the one that works best with your hearing aid device. Moreinformation about hearing aid compatibility may be found at:www.fcc.gov, www.fda.gov, and www.accesswireless.org.Getting the Best Hearing DeviceExperience With Your PhoneTo further minimize interference: Set the phone’s display and keyboard backlight settings toensure the minimum time intervals.1. Press > and tap Settings > Display settings> Brightness or Screen timeout.2. Tap the minimum time interval setting. Position the phone so the internal antenna is farthest fromyour hearing aid. Move the phone around to find the point with leastinterference.Caring for the BatteryProtecting Your BatteryThe guidelines listed below help you get the most out of yourbattery’s performance. Recently there have been some public reports of wirelessphone batteries overheating, catching fire, or exploding. Itappears that many, if not all, of these reports involvecounterfeit or inexpensive, aftermarket-brand batteries withunknown or questionable manufacturing standards. Boost isnot aware of similar problems with Boost phones resultingfrom the proper use of batteries and accessories approvedby Boost or the manufacturer of your phone. Use onlymanufacturer-approved batteries and accessories availableat www.boostmobile.com/accessories. Buying the rightbatteries and accessories is the best way to ensure they’regenuine and safe. In order to avoid damage, charge the battery only intemperatures that range from 32° F to 113° F (0° C to 45° C). Don’t use the battery charger in direct sunlight or in highhumidity areas, such as the bathroom. Never dispose of the battery by incineration. Keep the metal contacts on top of the battery clean. Don’t attempt to disassemble or short-circuit the battery. The battery may need recharging if it has not been used fora long period of time. It’s best to replace the battery when it no longer providesacceptable performance. It can be recharged hundreds oftimes before it needs replacing. Don’t store the battery in high temperature areas for longperiods of time. It’s best to follow these storage rules: Less than one month:-4° F to 140° F (-20° C to 60° C) More than one month:-4° F to 113° F (-20° C to 45° C)M580.book Page 184 Tuesday, January 17, 2012 9:48 AM