Tap the Settings icon:
Tap the Cellular option
3. Now toggle the Cellular Data toggle off, and then back on again -
This will assist in reestablishing the data connection for the device, by connecting you to the closest cellular tower. This is much quicker than restarting the iPhone.
If this does not help, please verify connectivity with your wireless carrier. You can search out any carrier here at http://downdetector.com/
*Please note that it is best to Toggle your cellular data once you see the spinning loading wheel for about a minute or two. If you re-establish the data connection in under 5 minutes you will not need to restart SWRemote. Restarting SWRemote is to be avoided when taking credit card information, as it will clear out the Credit Card number for security reasons.