Install an iOS device on the e315 to use it to process payments.
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Remove the screw at the top of the e315 beside the 2D barcode scanner. 
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Hook your finger under the notch. 
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Lift up to remove the casing. You can also use a flat head screwdriver or a similar tool. You can now proceed to install the iPod or iPhone. 
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Hold the device with the PIN pad facing down. 
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Align the port at the bottom of the iPhone/iPod with the Lightning connector on the e315 and push the iPhone/iPod down firmly. 
  
 If you are using an iPod, insert the flat plastic spacer before the iPod to fill the gap and ensure a tight fit.
  
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Replace the top casing and tighten the screw to secure the device. 
 