Sprint PCS makes use of CDMA technology on the 1900 MHz frequency band for both Voice and EVDO broadband data services. 1900 MHz cell phone repeaters can be used in almost all areas to amplify Sprint PCS Voice and EVDO signals for use with both cell phones and broadband data cards.
Note: This does not apply to Nextel cell phones.
Sprint PCS also makes use of a number of regional and national CDMA roaming partners in order to improve their overall coverage. If your phone is in roaming mode (it should display a roaming icon), then it may be using 800 MHz frequency band.
These resources may help you determine whether you are in a digital roaming area, or within the Sprint PCS national network
You can find a Sprint PCS coverage map at this link: Sprint Nationwide Coverage Map
The areas in dark green are covered by the Sprint PCS native 1900 MHz network. Orange areas also have the Sprint PCS EVDO broadband data services.
The wireless advisor website will display the license information for your area. Visit Wireless Advisor and use your ZIP code to find out whether Sprint owns licenses for broadcasting in your area. Please note that the information shown on Wireless Advisor does not indicate whether the band is actually being utilized by the network; it only shows which frequencies each network is licensed to make use of.
Contacting Sprint directly may help you identify the network your cell phone is using if it is roaming on a different network. You may wish to find a local branch or office that might have more specific information about the roaming agreements in your. Contact information can be found here: Sprint PCS Contacts
Please note: Some customer service representatives are more informed than others. If your call is answered by someone who doesn't seem sure, or cannot specify the frequency or roaming agreements in your area, you might try calling back again later or using one of the above resources.