This is one of the best operatwr becouse plan is low and network area wonderfull and this facility mts provide own modem and by sim.when I friend purchase laptope than he have faced more net problem. He is not access best network for net with other sim than I recommended that you purchase it mts modem. After purchase he have been very happy and joyfull feeling. But mts sim to use only mts mobile becouse this is cdma sim. But this network never give lose anytime. And internet speed to much very fast. Than you want fastest speed than purchase only MTS. Thank you.