Samsung SPH-M620ZKASPR - Manual (Page 150)

124 Section 2D: Controlling Your Roaming Experience
Using Data Roam Guard
Data Roam Guard asks you whether you want to roam off the
Sprint National Network. Data Roam Guard makes it easy to
manage your roaming charges by requiring an extra step
before you access data while roaming. (This additional step is
not required while on the network.)
To turn Data Roam Guard on or off:
1. Select Menu > Settings > Roaming
> Data Roam Guard.
2. Highlight Always Ask or Never Ask
and press .