“Turn On This Line” option missing

i have noticed weird behaviours on my iPhone 13 Pro’s Mobile Service interface.


a bit of context- I am currently having one active physical sim and one active eSIM configured in my phone. I travel between two countries often so I use them interchangeably. For instances, when I travel to a country, I will switch my default voice line and mobile data to the local line, and then toggle off “Turn On This Line” on the overseas line.


however, ever since I upgraded to iPhone 13, I noticed that the “Turn On This Line” option is sometimes missing. I didn’t encounter this issue when I was using iPhone XS.


I have reboot my phone and performed network reset, but the issue still remain.


I am on the latest iOS - 17.5.1. What went wrong here?

iPhone 13 Pro

Posted on Jul 12, 2024 8:11 AM

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Question marked as Top-ranking reply

Posted on Jul 12, 2024 8:32 AM

Found a fix.


if you happen to have more than two SIMs registered on your iPhone, try turning on a third line.


Because iPhone can only have two lines active at the same time, a pop up will appear asking which line you would like to turn off. I picked the one with missing “Turn On This Line”.


By doing so, I forced the unwanted line off and made “Turn On This Line” appear again.


definitely an interface bug. Apple, please look into this.

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1 reply
Question marked as Top-ranking reply

Jul 12, 2024 8:32 AM in response to keweiUTP

Found a fix.


if you happen to have more than two SIMs registered on your iPhone, try turning on a third line.


Because iPhone can only have two lines active at the same time, a pop up will appear asking which line you would like to turn off. I picked the one with missing “Turn On This Line”.


By doing so, I forced the unwanted line off and made “Turn On This Line” appear again.


definitely an interface bug. Apple, please look into this.

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“Turn On This Line” option missing

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