I live in a very remote area with spotty signal strength. I tried t-mobile with a signal booster supplied by them using the Samsung On5. I tethered the phone to my computer and it initially worked just fine. I left it in this state overnight and the next morning the connection was down. The phone could not be revived. T-mobile replaced my sim card and tried everything else but to no avail. Finally they replaced the On5 with a new On5. I tried tethering again and the same thing happened. The second phone could not be revived after initially working. I returned the equipment and cancelled the service. So, does anyone have an explanation for the equipment failure?