Manage Your Data Usage - HTC One User Manual

Can I make calls and use data services at the same time?
Certain capabilities may depend on your carrier's network and your plan. Please check with your
carrier for details.
With DDTM mode off (default, configured in Settings > C all > C DMA call settings):
If you are using the Sprint 3G Network when a voice call comes in, data transmission is
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suspended and will automatically resume when you complete your voice call.
If you are on a voice call, you will not be able to establish connection with the Sprint 3G Network.
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With DDTM on (configured in Settings > C all > CDMA call settings):
You cannot use voice and data services simultaneously. If you receive a call while data service is
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active, your phone 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 phone will not automatically resume an
interrupted data session.
With DDTM off or on:
You can make or receive a voice call while you are connected to the Sprint 4G LTE Network.
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Incoming calls will not disrupt or suspend your data connection.
When is my data connection active?
Your connection is active when data is being transferred. Outgoing calls are allowed; incoming calls
go directly to voicemail. When active, the arrows on the
When is my data connection dormant?
If your phone 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 phone receives no data for an extended period of time, the connection will terminate.
Can I sign out of data services?
You can sign out without turning off your phone; 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, and then touch the Off/On switch next to Mobile data.

Manage Your Data Usage

If you're on a limited data allowance, it's important to keep track of the activities and apps that usually
send and receive data, such as browsing the Web, syncing online accounts, and sending email or
sharing status updates.
Here are some other examples:
Streaming Web videos and music
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Tuning in to Internet radio
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Web and Data
or icon light up.
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