That's the huge problem about mobile helium and another thing is you can only mine these tokens on two compatible hotspot from MNTD and Nova Labs.
The only one who will make profit to these token including IoT are hotspot manufacturer. Maybe the reason for the pump is because HNT has recently spiked by more than 50%, but look at the drawback on Mobile: after it rises, it drops immediately, indicating that this token is easily manipulated.
For me, it is a risky investment unless you intend to purchase a hotspot, which I believe is much safer because you can switch to HNT if Mobile fails to make a profit.