It's time to upgrade my phone.

For the past 4 years, I have used the Casio Boulder flip phone and really liked it. It is very rugged and took a beating on many hiking and camping outings.

I am thinking of upgrading to a smart phone and wanted ETS member recommendations. My biggest fear about these type of phones is that appear very flimsy. Do they take the normal abuse that outdoor folks will likely subject them too? Do they stand up to dust, moisture and just general rough handling? Should I get any additional protection for it?

I like the idea of many of the outdoor-related apps that I see.

Thanks in advance for your help.