EV is a 3G wireless technology on Sprint and Verizon cell phones that provides users with data connection. EV is also referred to as EV-DO, which stands for evolution-data optimized. EV sometimes appears on a cell phone along with a separate cellular connection indicator.
EV-DO is part of the CDMA2000 standards. With this technology, users experience data rates as fast as 3.1 megabytes per second. These data rates are 10 times faster than 1XRTT, which was the technology released just prior to the EV technology. EV strictly controls data. Phone calls and text messaging are not controlled through the EV technology.Learn More
PUK, which is sometimes called the "PUK Code," stands for "Pin Unlock Code." It is occasionally called "PUC," which is the same as "PUK." This special code is needed to unlock the cell phone if the wrong four-digit pin number has been entered three times in a row or if the SIM Card has been reported stolen.Full Answer >
As of 2014, you can file a phone claim with Sprint using the Total Equipment Protection section of its website. On the website, you can start, continue and track phone claims and even track a return. For mechanical and electrical failures, Sprint suggests visiting a Sprint Phone Repair Center.Full Answer >
Many office phones and smartphones have mute buttons that enable users to mute the line. If it is not possible to mute a line from the phone's controls, many conference lines have touch-tone key codes that can mute individual lines or all lines during a conference.Full Answer >
The message "all circuits are busy" on a phone means that all available connections in that phone network are being used. A given network has a limited number of switches used to place calls, and when this number is exceeded, additional calls can only go through once others complete.Full Answer >