Appendix Notes when communicating with Android devices • The printer cannot connect to Android 2.3 and 2.32. • When communicating with Android 2.3.3 or later versions, communicate through an insecure connection. Notes when communicating with iOS devices Print data deletion and Bluetooth disconnections occur Situation Depending on the specifications of the iOS device, print data sent to the printer may be deleted. When this occurs, the Bluetooth connection between the printer and the iOS device is disconnected. Conditions This occurs when the printer is not ready to print, and 64 KB or more of print data is sent to the printer.
• When the roll paper cover is open • When the paper is out Solution Do not send data to the printer if the printer is not ready to print. For developers using the SDK from Epson, see the SDK's User's Manual - Chapter 3 Programming Guide - "Printing After Checking the Printer Status". Since Bluetooth is disconnected when this occurs, if the auto reconnect feature is not enabled, you need to reconnect from the Bluetooth settings screen on the iOS device. When using the SDK from Epson, this connection process is not necessary.
The iOS application receives the same data from the printer multiple times Situation Although the printer only sends data (such as the status) once to the iOS device, the application on the iOS device may receive the data multiple times. Conditions If no data is sent between the printer and the iOS device for at least 30 seconds during Bluetooth connection, the iOS device switches to power-saving mode. This problem occurs if the printer sends data to the iOS device while it is in power-saving mode. The following are examples of when this occurs.
• When the printer performs status communication with a command (DLE EOT, GS I, and so on) • When the printer sends an ASB In the following situations, this does not occur. • When the iOS device sends data to the printer • When data is sent to the iOS device before it switches to power-saving mode (less than approx. 30 seconds) after the printer has received data from the iOS device • When using the SDK from Epson (however, this may occur when receiving data from a printer using a com- mand transmission/reception API) 91