Telkom network data vs All network data

[bwana]

I usually use all network data bundles but if I add a telkom mobile bundle on top of that will it switch between the two intelligently or use them on a first loaded basis? Ie use the all network bundle first, then the telkom bundle once that is depleted?

 

[Bighit]

I'm on contract with them, get 10gb TM, 1gb All networks. My TM bundle is depleted first, unless I roam of course.

 

[bwana]

I'm on contract with them, get 10gb TM, 1gb All networks. My TM bundle is depleted first, unless I roam of course.

I normally roam, telkom's network being what it is, so I've got a all networks PAYG bundle loaded but I'm working this/next weekend in an area with good T.M. coverage so was wondering if I could get away with buying a T.M. bundle and just using that without using up all my all networks data.