OK folks, finally got somewhere thanks to @Marlton & @Sheena. By the sounds of the 'fix', it appears that Three must have made changes at their end to cause this issue because the default setting for the APN is 3ireland.ie and not 3internet. Newly upgraded phones as well as 2 year old phones were both experiencing this issue and the users would not have gone in and made the change themselves.
@Anonymous 'Communication is a wonderful thing'. Wonder how quickly you would be on to me if I made a 'subtle' change to my direct debit and money was not sending? Very poor service in my opinion. 4 weeks plus is not an acceptable turn around time for issues like this.
Anyway, iphone users, I am using an iphone 7 plus and here are the settings applicable to the iphone as opposed to @Marltons settings for his handset.
Go Settings/ Mobile Data/ Mobile Data Options/ Mobile Data Network
There are 3 sections - Mobile Data, MMS & Personal Hotspot. YOU ARE ONLY TO CHANGE THE MOBILE DATA SETTING!!!
The current setting for the APN in Mobile Data section is 3ireland.ie. Change this to 3internet
As there is no 'Save' button in this section, simply press the back (<) button.
I had an email in the Outbox which could not be sent and once this change was applied, off it went.
Can I also urge users to keep in mind that the online Mods are trying to assist you. Yes in this case, the service was poor but they were trying. One user yesterday, posted extremely aggressive and disgusting comments towards 3's staff. This is totally unacceptable. They don't deserve that type of abuse and I hope the offender is banned from 3's network henceforth. You wouldn't take that abuse in your own line of work so why should they.
Regards to all with the fix.
