■ What should you do if you receive the message, "Unable to activate eSIM."

If you are using iOS16, the following error message may appear during activation. 

(1) Please confirm that eSIM activation (installation) is complete. 
 

 In some cases, the eSIM may have been successfully activated (installed) even though the above error message was displayed. 
 

■How to check: 

Please check the "Settings" -> "Cellular" screen on your iPhone. 
 

In addition to the SIM of the carrier you usually use, Are there any other SIMs installed, such as "Sub Line," "Travel," "Mobile Data Communication," or "Work" as shown below? This may be the eSIM of Trifa. (* The name is randomly assigned by the iPhone.) 

Check if it is a Triffa eSIM 

・Check the "ICCID" to determine which eSIM is the Triffa eSIM. 

・Open the Trifa app and go to "My eSIM" → Select a plan → Check the "ICCID" and "eSIM" on the usage status page. 

・Please go to "Settings" -> "General" -> "About" on your iPhone, scroll down, and check the item marked "ICCID". 

・Please open the Triffa app and go to "My eSIM" → Select a plan → Compare with the ICCID on the bottom of the usage page. *The ICCID displayed on the iPhone has one digit added at the end, but it is OK if the first half matches. 

　Example: "89103000000060434764" and "8910300000006043476 

・If you have confirmed that the eSIM is from Trifa, please proceed to the SIM switchover settings. 

(2) If activation has not been completed 

・If you do not see the Trifa eSIM on the "Cellular" screen, restart your iPhone and try activating it again. 
 
 

 If you have any questions or concerns, please feel free to contact our chat support .