Dual SIM Settings for Travel eSIMs

How to label lines, choose cellular data, and keep your home number for SMS while using a travel eSIM for data.

Quick answer Keep your home line for calls/SMS if needed, set the travel eSIM as the cellular data line, and enable data roaming only on the travel line. Key points Label lines Travel Data and Home. Turn off data roaming on the home line. Test a small data request after landing. iPhone basics Open Cellular settings, confirm both plans appear, set the travel line for Cellular Data, and review roaming toggles per line. Android basics Open Network and internet, select SIMs, set the preferred data SIM to the travel eSIM, and confirm mobile data is on for that profile. FAQs Will WhatsApp keep my home number? Usually yes — WhatsApp uses the number registered in the app. Can both SIMs stay on? Many phones allow it, but battery use rises.