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Section 4A: Safety 159
Note: Phones rated M3 or M4 meet FCC requirements and may generate less
interference to hearing devices than phones that are not labeled. M4 is the
better/higher of the two ratings.
The ratings are not guarantees. Results will vary depending on the
user’s hearing device and hearing loss. If your hearing device happens
to be vulnerable to interference, you may not be able to successfully use
a phone that has been tested and rated as Hearing Aid compatible.
Trying the phone with your hearing device is the best way to evaluate it
for your personal needs. Should you experience interference when
using your [insert phone model here] with your hearing device, Sprint
suggests you promptly return the phone to the store. With the Sprint
14-day Risk Free Guarantee you may return the phone within 14 days of
purchase for a full refund. Sprint further suggests you experiment with
multiple phones (even those not labeled with an M3 or M4) while in the
retail store to find the one that works best with your hearing device.
Hearing devices may also be measured for immunity to this type of
interference. Your hearing aid device manufacturer or hearing health
professional may help you find results for your hearing device. The
more immune your hearing aid is, the less likely you are to experience
interference noise from wireless phones.
Getting the Best Hearing Device Experience With
Your CDM-105
One way to minimize interference is to set the phone’s Display and
Keypad backlight settings to ensure the minimum time interval.
To ensure the minimum interference for your Main Display’s backlight,
follow these steps:
1. Press Menu ( ) to access the main menu.
2. Select Settings().
3. Select Display().
4. Select Backlight().
5. Select LCD.
6. Scroll and select the minimum time interval setting (8 seconds).
7. Press Select ( ) to assign the desired option.
Safety
158 Section 4A: Safety
ⅷ
The battery may need recharging if it has not been used for a long
period of time.
ⅷ
It’s best to replace the battery when it no longer provides acceptable
performance. It can be recharged hundreds of times before it needs
replacing.
ⅷ
Don’t store the battery in high temperature areas for long periods of
time. It’s best to follow these storage rules:
Less than one month:
-4º F to 140º F (-20º C to 60º C)
More than one month:
-4º F to 113º F (-20º C to 45º C)
Disposal of Lithium Ion (LiIon) Batteries
For safe disposal options of your LiIon batteries, contact your nearest
Sprint authorized service center.
Special Note: Be sure to dispose of your battery properly. In some
areas, the disposal of batteries in household or business trash may
be prohibited.
Note: For safety, do not handle a damaged or leaking LiIon battery.
Using Your Phone With a Hearing
Aid Device
Your Sprint PCS Phone has been tested for hearing aid device
compatibility. When some wireless phones are used near some hearing
devices (hearing aids and cochlear implants), users may detect a
buzzing, humming, or whining noise. Some hearing devices are more
immune than others to this interference noise, and phones also vary in
the amount of interference they generate.
The wireless telephone industry has developed ratings for some of their
mobile phones, to assist hearing device users in finding phones that
may be compatible with their hearing devices. Not all phones have
been rated. Phones that are rated will have the rating on the box.
Your CDM-105 has an M4 rating.