2 and 6 quarters
GSM provides a better speech quality due to the fact that it is the per user bandwidth that GSM can provide. D-AMPS bandwidth is 24.96 MHz and GSM is 24.8 MHz.
cut 10x10 cm paper then check the weight of paper on gram. GSM is (weight of paper (W) divide by 0.01)
The units are incompatible.
rilles
Around as much as there is now.