they do bundle phone for their plan rmX one, the safest of course are those models

but after details unveiled, of course can get from open market the similar model or specifications, i don believe they work the way like YES create their own brand of phone (very bad sales)

as said, while TM holding 850mhz & 2600mhz, it can fine tune how it going to apply to "plans"

such as for plan got quota one ride on faster band band 40 (2.3GHz) or 38 (2.6GHz), now most probably band 38 tdd of P1 to be utilised first as P1 said wanna slowly convert it existing wimax customers base 2.3GHz to LTE later. so tm-p1 may have 3 bands to offer LTE finally.