24-12-2014 10:29 PM
24-12-2014 11:34 PM
25-12-2014 12:16 AM
If everything is working then don't worry about it.
It won't cost anything extra or cause any problem.
When you are on a virtual netwotk such as 48 (http://en.wikipedia.org/wiki/Mobile_virtual_network_operator) some phones will display a "roaming" 'R' on the signal bars.
On some there is a "national data roaming" option which gets rid of this.
Hope this helps.