How to Keep iMessage From Sending SMS
Posted 02/22/2012 at 8:14am
| by Cory Bohon
There’ve been several instances where my iMessages are delayed by a few minutes and then sent out as a regular text message. Sometimes this happens regardless of whether or not I’ve got full bars and my iPhone is connected to Wi-Fi. What gives?

Turning off Send As SMS will ensure you aren’t charged if iMessage can’t make a connection.
By default, your iPhone is set to automatically send the iMessage through SMS if the servers are down or you can’t find a Wi-Fi connection. You can change this setting under Settings > Messages. Make sure that Send As SMS is turned off so that you aren’t charged if iMessage can’t make the connection. Instead, it just simply won’t send.
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