Should I switch on data roaming when using the eSIM service? Richard White January 03, 2020 16:24 Updated Follow Yes this should be switched on. Related articles Will my regular physical SIM still work after the eSIM service is downloaded? How do I install the eSIM service to my handset? How fast is the network speed? Which mobile handsets support the eSIM service? What is an eSIM? Comments 0 comments Please sign in to leave a comment.