I don't know that Bell has been incompatible with Rogers since 2G. The 3G and later phones have been using the same tech. The big difference between Rogers and MTS was that MTS used the "AWS" (1.7 & 2.1 GHz) bands, compared to the 850 MHz and 1.9 GHz bands Rogers and Bell were using. Of course, since then, there have been increases in the spectrum carriers use.MTS was partially into an LTE upgrade at the time. I doubt that Bell wants to share networks with Rogers, which was also incompatible with Bell.