1) No network after inserting Sim - Please wait, Sim sometimes take several minutes to scan all networks - Check that Sim has been inserted correctly - Try at different location just in case it is a coverage issue - Switch off and leave phone for 5mins before turning back on. Make sure network search is on Automactic (iOS: Settings> Mobile network> Network Selection> Turn on ‘Automatic’ ; Android: Settings> Mobile networks> Network operators> Choose automatically) - Reset network (iOS: General> Reset> Reset Network Settings; Android: Backup& Reset> Network settings rese> Reset settings) 2) Mobile network, but no/ slow data connection - Check that ‘Data’ and ‘Data Roaming’ are both on - Make sure the eSim/ Sim is selected for data usage - Manually switch between 3G, 4G/ LTE and 5G auto (iOS: Settings> Mobile data> Voice& data; Android: Settings> Mobile networks> Preferred network type) - Switch off and leave phone for 5mins before turning back on. Make sure network search is on Automactic (iOS: Settings> Mobile network> Network Selection> Turn on ‘Automatic’; Android: Settings> Mobile networks> Network operators> Choose automatically) - Adjust APN settings for optimal connectivity (generally not necessary): Add the APN ‘fastaccess’ for Global eSim/ Sim, ‘3gnet’ or ‘mobile’ for APAC eSim/ Sim ( iOS: Setting> Mobile data> Mobile data options> Mobile data network> APN; Android: Setting> Mobile Networks> Access Point Network (APN)> Click on ‘+’ sign), - iPhone devices not showing APN settings shall go on this website to make the adjustments: http://www.unlockit.co.nz - Select Sim profile: on Android, please look for pre-installed Toolkit/ USim app, and on iOS please look for DMI in Settings (in Mobile Data or Sim Card). Then go to: USIM Services -> DMI -> Settings -> Profile -> 26006* 3) Cannot make calls - Check that your Sim type offers outgoing calls as many of our Sims do not offer this function - Make sure you have added country and regional code to the number (e.g. +49) - Try to call another number (e.g. hotel or friend) to test general functionality 4) Balance display/ PDP failure - If 'PDP authentication failure' is displayed, this most likely means your balance has been used up, please topup - If you feel that balance display might be incorrect, please go to 'Update/ Connect Sim' and insert your Sim number to reconnect Sim and app