If you have correctly completed the declaration form on the Entry Quarantine System, the system will not send a text message until you arrive in Taiwan. If you still cannot receive the text message after arrival, you can follow the steps below to troubleshoot the problem: Check the accuracy of your personal information Check whether your passport number or resident certificate number on the Entry Quarantine System is consistent with that used when purchasing your flight ticket. In addition, check whether your mobile phone number or country code (e.g. +886) is correct. Please check again whether the mobile phone number inputted into the Entry Quarantine System is correct before you submit your personal information. If you are not an R.O.C (Taiwan) national, please click the "No Passport Click Here" button, and the system will automatically fill in your passport number. SMS settings for sending and receiving messages on your mobile phone Please make sure that your phone can normally make and receive calls or send and receive text messages. If your phone is set to airplane mode during the flight, please turn off airplane mode and restart your phone to send and receive text messages normally. Please check your phone's brand and model and whether it has a message filtering function; if you have a Huawei phone (call settings → menu → harassment interception) or a Xiaomi phone (security center → harassment interception → settings). Please ask airport quarantine personnel to use the troubleshooting function. After verifying your passport number, name, and other information, a text message will be sent to you.