I have a tablet that I brought from Amazon that you can put two sim cards into the back so you can use it on your travels or if your out and about and there is no wifi and even if there is public access wifi it's not safe at all .
My gifgaff sim cards that are in my tablet works well as my tablet but some settings are not the same as phone settings I know this as I had to go to my tablet settings and set the sim card up , it was easy to do.
But the idea to have settings for tablets as well as phones I believe to be a easygoing idea to
But MMS and INTERNET settings could be published as some settings are not the same as you own phones settings.
Just a idea