palmOne Treo 650 Using Manual page 215

I can't send or receive text or multimedia messages
• Make sure the SIM card is inserted correctly (see "Inserting the SIM card" on
page 17) and your phone is turned on (see "Turning your smartphone on and off"
on page 18).
• Contact Cingular Wireless to verify that your plan includes messaging services, that
these services have been correctly activated, and that they are available at your
location (Cingular Wireless should be able to tell you if messaging services have
been experiencing transmission delays).
• If possible, contact the recipient of the message, and make sure the receiving
device can handle the type of file that is being sent.
• Confirm that the DUN setting is turned off in the Bluetooth
"Enabling DUN on your smartphone" on page 126).
• If a message arrives but does not display an alert, perform a soft reset
(see "Performing a soft reset" on page 205).
I can't make or receive calls using a hands-free device
with Bluetooth technology
Check all of the following:
• The Bluetooth setting is turned on in the Bluetooth application.
• Your hands-free device with Bluetooth wireless technology is charged and
turned on.
• Move the smartphone and hands-free device closer to each other.
• Confirm that the DUN setting is turned off in the Bluetooth
"Enabling DUN on your smartphone" on page 126).
• The Bluetooth application screen is closed.
® application (see
® application (see
Network connection :: 213