How to protect your smartphone from exploits on websites?

Question

Information Security

Own, if we have a smartphone (at least an iPhone, at least bq on ubuntu) - how to protect ourselves from such bundles?
Antivirus does not need to be advised.
Answers that in our time the secrets are already with the NSA, this is a flood.

Answer 1

KO suggests that you do not need to access sites from a smartphone that needs to be protected.

Answer 2

bury your smartphone and forget about it