T-Mobile SDA Troubleshooting Guide
Problem
Solution
Power and Battery
My device’s date and time reset to factory
default when the battery is removed or
replaced.
Always re-insert the battery immediately while replacing it. Data
may be lost if the battery has been removed for a long time.
During initial charge, how long should a
battery be charged?
Your phone is equipped with a Li-Ion battery. Li-Ion batteries
should be charged for 5-6 hours initially. Thereafter, you can
charge according to the user manual. Remember that a battery,
after lying on a shelf for some time, usually takes 2 to 4 full
charges and discharges before it achieves its full potential.
What is the best way to optimize the
standby times on batteries and increase
battery life?
To optimize battery life and conserve power, you can adjust the
Power management settings for display, backlight, and light
sensor.
How does the ‘Backlight timeout’ differ
from the ‘Display timeout’?
The ‘Backlight timeout’ specifies the time the light on the display
will be tuned on to its brightest setting. When off, the screen is
still active and is viewable in certain light conditions. The
‘Display timeout’ will turn off the display entirely while leaving
the device on to continue receiving calls or performing data
operations.
Why does my screen go blank?
Your phone may be configured to shut off the display after a
period of inactivity to conserve battery power. To turn the screen
on again, press any key. You can adjust the display time-out
using the Power management settings.
Sound and Ring tone
My device doesn’t make any sound.
Check the Sounds settings by clicking Start > Settings > Sounds.
Check the current profile. Your phone may be in silent mode.
I am in a meeting. How do I change my
phone ringer to vibrate?
Click Start > Settings > Sounds, and select Vibrate as the Ring
tone for your phone. Finally, click Done. You can also press the
Quick List key on the top of the phone and select Meeting from
the profile list.
Can I have my device vibrate and play my
ring tone when I receive a call?
Yes, using sound ‘Profiles’ you can specify how your device
alerts you to incoming calls and other device alerts and
notifications. By editing a profile and choosing ‘Vibrate and
Ring’ as the ring type, your device will both vibrate and play the
currently selected
I cannot find the ring tone I just copied to
my device. How can I select it?
Files you wish to use as custom ring tones should be placed in the
\Smartphone\Application Data\Sounds directory on your device.
The ring tones may also be located in the \Storage Card folder if
a MiniSD card is present.
Phone
My phone says that it is blocked and that I
need a PUK.
The SIM card on your phone is usually blocked when your SIM
PIN is entered three times incorrectly. You can unblock it by
obtaining the PIN Unblocking Key (PUK) from your service
provider.
