Palm Treo 755P User Manual page 316

If a text message arrives but does not display an alert, perform a soft reset (see "Soft
Reset" on page 288).
I Can't Send or Receive Sprint Picture Mail Messages
Make sure your phone is turned on (see "Turning Your Device's Phone On and Off" on
page 55).
Contact Sprint to verify that your plan includes Sprint Picture Mail messaging services,
that these services have been correctly activated, and that they are available at your
location. Sprint should be able to tell you if messaging services have been experiencing
transmission delays. Delays can also occur between the time that a message is sent and
the time it is received.
Make sure that the Sprint Vision
in the title bar of the Main view of the Phone application. If you do not see one of these
icons, data services are not available in your current location and you cannot exchange
Picture Mail messages.
Verify with the recipient that the receiving device can handle Picture Mail messages.
If you have an active DUN session (that is, you are using your device's phone as a
modem), terminate the session (see "Using Your Device's Phone as a Modem" on
page 110 or "Using Your Device as a Wireless Modem" on page 164).
If a Picture Mail message arrives but does not display an alert, perform a soft reset (see
"Soft Reset" on page 288).
Web
I Can't Tell If Data Services Are Available
When your phone is on, icons appear in the title bar in the Main view of the Phone
application to indicate whether data services are available and whether a data connection
is active. See "Checking Signal Strength and Phone Status" on page 95 for a description of
the icons that indicate that data services are available.
If your phone is on and you do not see any of the data icons, then data services are not
available in your current location.
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icon or Sprint Power Vision
SM
or icon appears
Section 7A: Help