The connection to your cell provider is encrypted (GSM providers at
least- it'll stop many attackers, but (as is usually the case) a
dedicated attacker could probably break it or more likely social
engineer their way in. It's really not that different than your cable or
DSL modem connection -
I do have some apps on my phone that I use but I am really not a big
smart phone user. If I am mobile I would rather pull out my laptop.
And I am really not sure about phone security. My phones are updated
to the current OS, and I use an app called folder lock to protect
what matters but I