The checklist also needs to include money in a usuable form. Most illegal immigrants try not to get registered in southern european countries (due to the dublin regulation), but want to travel further. In that case you are own your own and need money for traveling, water, food, shelter, etc. A lot of them ran out of money rather quickly...

Anyways as for the smartphone, it's a great tool. However people should be aware of the internet and knowing what the limitations are. Not knowing the local lauguages and trying to use translation and hearsay, combined with people trying to rip you off can lead to lots of wrong information.

And make sure you can plug it in or have another charge option.