I bought one of Sprint's Sierra Overdrive Pros. It is a cellular data device that connects to the inter-net through the cellular data network.<br /><br />I opened an account with Sprint for the device and I am still in the two week trial period. It runs out on Monday, so I still have until then to see if I can make it work.<br /><br />I bought an external antenna:<br /><br />http://www.ebay.com/itm/261079620600?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649<br /><br />My hope is to get external antennas for areas that don't have good service and hopefully get service in those areas.<br /><br />If I connect the external antenna, it seems to have no effect on this device whatsoever. I don't get any more bars or anything. If I drive to an area where I just start to get out of reception and then connect the antenna, I get no improvement in reception.<br /><br />Does anyone have any experience with these types of devices that can help or explain what is happening?