Android accounts for one-quarter of mobile web traffic
Android is mopping up Apple and RIM's declining mobile mindshare in the US, you'll find nothing but corroboration from Quantcast. The analytics firm reckons a full one-quarter of mobile web traffic stateside comes from devices running Google's OS
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Quantum Tunnelling is perfectly safe and occurs all the time in everything. Basically, in classical physics, things can be kept in place by potentials they don't have the energy to overcome (i.e. you are kept on the surface of the Earth by the gravitational potential of the Earth and you not having the energy to overcome it, protons/neutrons kept in the nucleus because of the extraordinary energy they'd need to escape...etc).
That doesn't happen, though. Protons and neutrons can leave the nucleus (for example in alpha decay) without needing to overcome the potential holding them in place. It's almost like they "tunnel" through the potential barrier. It was an explained yet mysterious phenomenon until quantum physics, which explained mathematically that there was never zero chance of the particle not emerging on the other side of the barrier, no matter how large the potential barrier holding it in place.
In fact, all electronics use this. For example, if you have a thin layer of oxide on the surface of your material, that would represent a barrier to electrons trying to get through. Thanks to quantum tunnelling, they can make it through. For example, ohmic contacts that connect the raw silicon of a transistor to the copper cables uses tunnelling.