Samsung SPH-D600 User Manual (user Manual) (ver.f7) (English) - Page 224

Thus, if you pair an M3 hearing aid with an M3 phone, you will have a combined rating of six for "excellent use." This is synonymous for T ratings. Sprint further suggests you experiment with multiple phones (even those not labeled M3/T3 or M4/T4) while in the store to find the one that works best with your hearing aid device. Should you experience interference or find the quality of service unsatisfactory after purchasing your phone, promptly return it to the store within 30 days of purchase. (A restocking fee may be applied to exchanges. Visit www.sprint.com/returns for details.) More information about hearing aid compatibility may be found at: www.fcc.gov, www.fda.gov, and www.accesswireless.org. Getting the Best Hearing Device Experience With Your Phone To further minimize interference: ⅷ Set the phone's display and keypad backlight settings to ensure the minimum time intervals. 1. Press > and touch Brightness, or Screen timeout. > Display > 2. Touch the minimum time interval setting. ⅷ Position the phone so the internal antenna is farthest from your hearing aid. ⅷ Move the phone around to find the point with least interference. Caring for the Battery Protecting Your Battery The guidelines listed below help you get the most out of your battery's performance. ⅷ Recently there have been some public reports of wireless phone batteries overheating, catching fire, or exploding. It appears that many, if not all, of these reports involve counterfeit or inexpensive, aftermarket-brand batteries with unknown or questionable manufacturing standards. Sprint is not aware of similar problems with Sprint phones resulting from the proper use of batteries and accessories approved by Sprint or the manufacturer of your phone. Use only Sprintapproved or manufacturer-approved batteries and accessories found at Sprint Stores or through your phone's manufacturer, or call 1-866-866-7509 to order. They're also available at www.sprint.com - click Accessories. Buying the right batteries and accessories is the best way to ensure they're genuine and safe. ⅷ In order to avoid damage, charge the battery only in temperatures that range from 32° F to 113° F (0° C to 45° C). ⅷ Don't use the battery charger in direct sunlight or in high humidity areas, such as the bathroom. ⅷ Never dispose of the battery by incineration. ⅷ Keep the metal contacts on top of the battery clean. ⅷ Don't attempt to disassemble or short-circuit the battery. 210 4A. Important Safety Information