inputs.text: ecomgear tracker - correction unit stopped working disregard following favorable reviewthe unit came directly china smart looking box small lightweight stylish comes small battery charger went att store get sms card unique phone number bought plan textmessagingonly no voice cost 10 30 days could try get 1 year service 100 units instructions not translated english well adequate used stepbystepwhile initially setting unit indicator light not blink show receiving gsmgps signals took sim card put back together couple times metal plate foil holds sim card tricky slid pretty hard track get place finally started blinkinginitializing unit changing default password easy sending text messages cell phone waiting quick text reply described instructions making 10 phone calls unit made cell phone administrator allowing another cell phone contact unit also went wellif unit sent cell phone call recorded voice answer sends back text message web address find units location goggle map iphone could tap address correct location address rapidly displayed street map sometimes necessary call twice sure got updated locationother features not explore voice surveillance geofence movement alert overspeed alert sos button unit works cell phone text messaging system sms default changed gprs data system webbased tracking pc software instructions webbased tracking included ona 3 inch cd not try outoverall unit exactly wanted fairly inexpensively keep mercedes ever stolen ill know location family members drive car always find location needed dog occasionally strays far yard putting collar would let quickly know find