SIM card for data only
Can a SIM card be used for data only in @n iPad
Apple TV 4K, tvOS 16
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Assuming that you have a WiFi+Cellular model iPad, the only type of SIM that you can use is a DataSIM.
An iPad, whether a Cellular model or not, is not capable of directly accessing Cellular Voice or SMS/MMS Messaging features. An iPad with either WiFi or Cellular connectivity alone can only access IP-data services.
If you have added a DataSIM and Cellular plan to a WiFi+Cellular model of iPad, the number associated with the SIM card is only used to identify your account for billing purposes. This number is not used for making calls or sending messages. An iPad cannot be used a standalone alternative to a mobile phone.