After arriving at the site, insert the SIM card. In the case of a dual SIM-supported mobile phone, insert the SIM card into slot 1 and leave slot 2 empty
Enable "Cellular Data" and "Data Roaming". Most devices should automatically select an APN to connect to - If the data connection does not work, please set it manually according to the manual
Before leaving the country, be sure to check whether the country lock is off on the device you are using