I thought altel is in the alibaba untung atas angin license renting business lol. They've got their own prepaid plan and all, but it seems like just smoke and mirror for the more profitable renting spectrum to celcom and digi. Not even sure if they're using the 900mhz one anywhere.

Thats because yoodo is directly under celcom. It is a celcom subsidiary. "real" mvno like tunetalk, xox, redone, tonewow, toneplus isn't related to celcom and digi, company wise. They're only renting access to both network whereas yoodo is celcom, employees paid by celcom. Weird thing here is digi tapp, i though tapp is similar to yoodo, like a digi subsidiary. Strange that only yoodo is mentioned because its connection to celcom but not tapp for its connection with digi.