Credit: • • • New rules governing U.S. Wireless carriers went into full effect on Wednesday, although many carriers had been following the guidelines for nearly a year. These new rules are part of a voluntary “” administered by, the main wireless trade association. All four big carriers — including AT&T, Verizon, T-Mobile, and Sprint — have agreed to them, along with several smaller pre-paid carriers. Pdf To Paint Converter Software Free Download. There’s a lot of consumer-friendly policies included in the consumer code, including new ground rules for unlocking your smartphone or tablet. Carriers in the United States lock the SIM slots on the devices they sell so you can’t take them over to a competing carrier for a better deal for service. Power Dvd Player Free Download Full Version Crack on this page. But the new consumer code requires them to unlock devices on request and sets out clear rules for when the carriers have to comply. How do I unlock my phone if I have AT&T, T-Mobile, Verizon or Sprint?