  Inspired by a recently conjectured universal bound for thermo-electric
diffusion constants in quantum critical, strongly coupled systems and relying
on holographic analytical computations, we investigate the possibility of
formulating Planckian bounds in different holographic models featuring momentum
dissipation. For a simple massive gravity dilaton model at zero charge density
we find robust linear in temperature resistivity and entropy density alongside
a constant electric susceptibility. In addition we explicitly find that the sum
of the thermo-electric diffusion constants is bounded.
