Android Cell Phone RBMHD 用户手册

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42
12.3.2 Adjusting the Volume
You can adjust the volume from the Home screen or any application screen (except during a call 
or when playing music or videos). Press the Volume keys to adjust volume to the level you desire.
You can also adjust the volume from the settings screen.
1. On 
the 
Settings
 screen, touch 
Sound
 > 
Volume
.
2.  Drag the slider left to make the volume lower, or right to make it higher.
3. Touch 
OK
 to save the adjustment.
12.3.3 Changing the Phone Ringtone
1. On 
the 
Settings
 screen, touch 
Sound
 > 
Phone ringtone
.
2.  Touch the ringtone you want to use, and then touch 
OK
. The ringtone plays when selected.
12.3.4 Changing the Message Ringtone
1.  On the Home screen, touch 
 > 
Messaging
.
2.  In the message list, touch 
 > 
Settings
 > 
Select ringtone
.
3.  Touch the ringtone you want to use, and then touch 
OK
. The ringtone plays when selected.
12.4 Setting Phone Services
12.4.1 Customizing Call Settings
You mobile phone service provider offers different services such as call forwarding, call waiting, 
fixed dialing numbers, and voicemail. You can customize many of these services if they are part of 
your calling plan.
On the 
Settings
 screen, touch 
Call settings
 to customize your call functions.
12.4.2 Turning on Data Roaming
1. On 
the 
Settings
 screen, touch 
Wireless & networks
 > 
Mobile networks
.
2. Select 
the 
Data roaming
 check box.
  Note:  
Accessing data services while roaming may incur additional charges. Ask your wireless service 
provider about data roaming fees.
12.4.3 Switching off the Data Service
1. On 
the 
Settings
 screen, touch 
Wireless & networks
 > 
Mobile networks
.
2. Clear 
the 
Data enabled
 check box.
12.5 Setting Text-to-Speech
Use the Text-to-Speech settings to configure the Android text-to-speech synthesizer, for 
applications that can take advantage of this feature.