Dial *#06#
Open your phone app and dial the code. If an EID number shows up, your phone supports eSIM.

Most phones from 2019 onwards support eSIM. Check your model in a second, or browse the full list by brand.
Dial *#06#. If an EID number appears, it takes an eSIM.
iPad Wi-Fi + Cellular · Smartwatches share your phone's plan
Not on iPhones bought in mainland China. Hong Kong and Macao models only for the 13 mini, 12 mini, SE (2020) and XS. Wi-Fi + Cellular iPads work too.
Open your phone app and dial the code. If an EID number shows up, your phone supports eSIM.
Look for an EID row in About. You can also check for Add eSIM under Cellular or Mobile Service.
Open SIM status or Status information. An EID entry means eSIM is supported.
Phones bought on a contract or payment plan are sometimes locked to one carrier. A locked phone can't use a travel eSIM, even if the model supports it.
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Most phones from 2019 onward do — iPhone XS and newer, Pixel 3 and newer, and recent Samsung Galaxy S and Z models. Your phone also needs to be network-unlocked. Dial *#06# — if you see an EID number, you're set.
No. Your phone holds the eSIM and your home SIM side by side. Keep the home SIM in and switched on: it is how calls, SMS and bank OTPs reach you while the eSIM carries your data.
No. The eSIM installs as a second line alongside your physical SIM. Your own number stays active for calls, SMS and OTPs — just keep its mobile data switched off so you don't get roaming charges.
On an iPhone: Settings › Mobile Service › Mobile Data, choose the travel line, then turn Data Roaming on for it. On Android: Settings › Network & internet › SIMs, set the travel eSIM for mobile data and turn Roaming on. Leave calls and SMS on your home SIM.
Yes. WhatsApp stays linked to your home number and keeps working over the eSIM's data — chats, calls and video calls. You do not change your number, so there is nothing to re-verify.

Pick a plan for your destination and be online when you land.