However, many services advertised as 3G provide higher speed than the minimum technical requirements for a 3G service.While the GSM EDGE standard ("2.9G"), DECT cordless phones and Mobile Wi MAX standards formally also fulfill the IMT-2000 requirements and are approved as 3G standards by ITU, these are typically not branded 3G, and are based on completely different technologies.However, if your phone is 4G and has a SIM card, updating your roaming towers in this way can do more damage than good to your SIM card.
Updating verizon wireless service
It's important to know Verizon's rules on roaming so that any roaming charges don't come as a surprise.
Keep in mind that it could take over a month for a carrier to tell Verizon that you owe roaming charges.
Verizon says that this service will give you clear, crisp connections in more places in the United States.
Also, if you keep your phone updated, you will have the ability to connect to the digital network in more parts of the country.
Each generation is characterized by new frequency bands, higher data rates and non–backward-compatible transmission technology.