As noted above, each individual smartphone/tablet is different in a myriad of ways, so in cases where a connection is does not work right away, please email snclabs@gmail.com so that we can address your specific situation.  We make every effort to respond promptly to inquiries, and you can view some of our customer service success stories in the reviews below.  We are constantly improving the code and features of WiFi Tether Router, so your feedback is important!