Handy as a secondary phone
Living on the irish border we used to need two phones for everything. one for the uk networks and one for the southern networks, and having the wrong phone in the wrong room of the house could cost dearly.
Then add a work phone and some people were carrying around 1 main phone and 4 cheaper phones. My mother still uses nokia's last colourful nostalgia phone as her work pieces (one for the north, one for the south, because the public sector is not smart)
As for me, this or the aforementioned 3310 would be my "going through American border" phone with just my sim and no sensitive data