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CommCare provides a configurable Messaging system for sending SMS. To enable it in a particular location, you must establish an SMS gateway that provides two-way SMS in your target region.
Android Gateway
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A very popular option that works in any location is to set up an Android Gateway using Telerivet and a local SIM and Android device. This is our recommended approach to setting up a gateway for CommCare. Other Android gateways are available, including with Twilio.
More information can be found here: Setup an Android SMS Gateway .
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