we discovered that the phone would not receive any SMS from iPhone users. I deduced that the issue had to do with iMessage. So a quick check of the web showed that there was a utility on the Apple website to "deregister" your mobile number from using iMessage.
Apple releases iOS 10 to the general public which coincides with their release of the new iPhone 7 and 7 Plus.
As often the case with most new software updates, there are going be some users experiencing problems and this iOS 10 from Apple is no exception
This information is presented as a general troubleshooting aid, as a public service. Not all of the error codes when presented by a printer in an error mode are correct. Due to the way something fails, an incorrect error code is possible, if not likely.