HTC EVO Shift 4G Manuel D’Utilisation

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If you are on a voice call, you will not be able to 
establish a 3G data connection.

With DDTM on (configured in 

Call

 settings):

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You cannot use voice and data services 
simultaneously. If you receive a call while data 
service is active, your device will forward the call to 
voicemail. You can place an outgoing call at any 
time, but it will interrupt any in-progress data session. 
Your device will not automatically resume an 
interrupted data session.

With DDTM off or on:

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You can make or receive a voice call while you are 
connected to the 4G data network. Incoming calls 
will not disrupt or suspend your data connection.

When is my data connection active?

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Your connection is active when data is being 
transferred. Outgoing calls are allowed; incoming calls 
go directly to voicemail. When active, the 

 or 

 

indicator animates on your device’s display screen. 

When is my data connection dormant?

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If your device receives no data for ten seconds, the 
connection goes dormant. When the connection is 
dormant, you can make and receive voice calls. (The 

connection may become active again quickly.) If your 
device receives no data for an extended period of time, 
the connection will terminate.

Can I sign out of data services?

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You can sign out without turning off your device; 
however, you will not be able to browse the Web or use 
other data services (unless you establish a Wi-Fi 
connection.) While signed out, you can still place or 
receive phone calls, check voicemail, and use other 
voice services. You may sign in again at any time. To 
sign out, go to 

Settings > Wireless & networks 

and clear 

the 

Mobile network

 check box.