Nothing. The phone number service does not use mobile networks, it uses the Inte...

zie 3 months ago | parent | context | favorite | on: Adapter lets you use cheap eSIM plans on any Andro...

Nothing. The phone number service does not use mobile networks, it uses the Internet via XMPP/Jabber. Connections to the Internet is your problem. Or buy the JMP Data Plan, which is a separate product all together.