iPhone · 2015
Does the iPhone 6s have eSIM?
No · no eSIM
No, the iPhone 6s has no eSIM: it works with a physical SIM only, so a travel profile cannot be installed on it. For data abroad that leaves a local SIM or your carrier's roaming.
The iPhone SE (2016) that follows in 2016 does not.
eSIM arrived in the iPhone only in 2018, with the XS, XS Max and XR. Anything older works with a physical nano-SIM only.
Check your unit in a minute
Settings → General → About
Scroll down: an EID row means eSIM is supported. No EID row, no eSIM.
Settings beat any list: the same model ships with and without eSIM depending on the country.
Data abroad without eSIM
Other iPhone models
Common questions
Can I install a travel eSIM on the iPhone 6s?
No. A travel profile is an eSIM, and this model has no built-in eSIM chip. For data abroad, a local SIM at the airport or your carrier's roaming pass are the options.
How many eSIMs does the iPhone 6s store, and how many work at once?
None: the model has no built-in eSIM chip.
What if a list says one thing and Settings says another?
Trust Settings. The same model is released with and without eSIM for different countries, and firmware can disable the chip. If there is no entry to add an eSIM, there is nowhere to put the profile.