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If you have the ability, by all means set up encrypted VPN to your home or workplace. Traffic will travel long ways, but will always be encrypted. Unfortunately, not all mobile devices have VPN software...

There are public tunneling services.. those might present security problem as well, use with caution.

Another interesting observation: we are told the number of Android smartphones is higher than the number of iOS smartphones. But it seems most of these phones are not in fact "smart", because they don't use any form of network connectivity and are used just as feature phones.