Enable Data Roaming
How to enable data roaming on your device — required for eSIM to work abroad.
Enable Data Roaming
Data roaming must be enabled for your Simsima eSIM to work. Since Simsima eSIMs use international partner networks, your device treats the connection as roaming. Do not worry — you will not incur any extra charges. Your Simsima plan already covers the data.
Why Is Data Roaming Required?
When you use a Simsima eSIM abroad, your device connects to a local partner network. Your phone classifies this as "roaming" because the network is different from the eSIM's home network. Without data roaming enabled, your device blocks the connection.
Important: Enabling data roaming for your Simsima eSIM will NOT cause charges on your primary SIM, as long as you set Simsima as your mobile data source.
iPhone Instructions
Android Instructions
Stock Android / Google Pixel:
Samsung (One UI):
Protect Your Primary SIM
To avoid roaming charges on your home carrier SIM while abroad:
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