Question 1)
Their has been 5 generations 0G , 1G , 2G , 3G ,4G plus some in between generations ,...etc
I am wondering how backwards compatibly or forward compatibly the generations are for different phone providers?
Question 2)
Are AT&T , Verizon , T-mobile , Sprint the only major cell networks/providers in the United States?
Question 3)
How compatibly is their hardware / modulation ,...etc what networks in theory could you interchange your service with (forgetting for a moment the legal issues of breaking a contract etc..)
Like a phone made for At&t networks could it be switch to a Verizon or other network..... without changing the hardware or is the modulation schemes and hardware to transmit totally not compatible?
Their has been 5 generations 0G , 1G , 2G , 3G ,4G plus some in between generations ,...etc
I am wondering how backwards compatibly or forward compatibly the generations are for different phone providers?
Question 2)
Are AT&T , Verizon , T-mobile , Sprint the only major cell networks/providers in the United States?
Question 3)
How compatibly is their hardware / modulation ,...etc what networks in theory could you interchange your service with (forgetting for a moment the legal issues of breaking a contract etc..)
Like a phone made for At&t networks could it be switch to a Verizon or other network..... without changing the hardware or is the modulation schemes and hardware to transmit totally not compatible?