Samsung SCH-8500 User Manual page 38

When you use your phone on other CDMA networks, your
calling experience and call quality will be similar to what you
experience when making calls from within the Sprint PCS
Network. Although certain voice-calling features may not be
available, your phone calls are still private and secure.
When you use your phone on analog cellular networks, your
experience will be different. Cellular roaming will be similar
to the quality provided by conventional analog cellular
carriers today. Although you will still have the convenience of
being able to make and receive voice calls, here are some
differences you can expect:
You are more likely to experience static, cross-talk,
fade-out and dropped calls.
Some features (such as Caller ID, Voice Dialing and Voice
Memo) that are standard within the Sprint PCS Network
may not be available.
Sprint PCS Wireless Web and Fax calls cannot be
connected.
You will experience the same security and privacy risks
(eavesdropping and phone number cloning) that exist
with conventional analog cellular services today.
Battery life will be shorter when you use your phone for
cellular roaming than when you use it on a CDMA
network.
If you're on your phone and leave a Sprint PCS Service Area,
your call will be dropped. When reentering a Sprint PCS
Service Area while on a roaming call, end the call, and then
turn your phone off and on again to acquire Sprint PCS
Service.
If you need customer service while using your phone outside
the Sprint PCS Network, dial 1-888-211-4PCS (4727) for
Sprint PCS Customer Care.