Wow, what a story, 3 years+ no issues with the Mifi 3 g, swtich to 4 g, on the Samsung device, replaced once in a week didnt work, now i am travelling need it have no internet, so VErizon overnights me the MIFI 4 G, cause I would accept the Samsung, and they send wrong battery, no SIM card and it I am still shut down...I call they say, sorry, will ship you another one...really? I am in Indy, no Center City Stores...so I either drive 8 miles to get it fixed...or tough luck...I have trade show tomorrow, and NO internet, even though I spend 60 + month, and another 250+month on cell....GOOD BYE VERIZON now I am told to wait 24-48 hours for a return call...REALLY? is that REALLY service, off to post same on Facebook, and such, these companies are too large, I spend $3,000 plus a year and dont have internet, and i keep hearing sorry, it dont work, sorry we sent you the wrong thing, SORRY? BAD BAD SERVICE