"Via telefono estas tre granda. Vi bezonas poŝtelefonon."

Translation: Your telephone is very big. You need a mobile phone.

[jumpthewalls]

This is ironic considering how big poŝtelefonoj are getting these days

[Wallydogdirt]

Buy a thumb extender now!

[GXLD.]

I was thinking the same thing. My phone is as big as my calculator :P

[computervirus99]

I've had the same iPhone 5 for years so I don't have that problem

then again I have an otter box and those are huge

[ysangkok]

[MikeMcDani2]

La unua poŝtelefono.

[deactivated user]

Something you'd say to a tablet owner?

[GrishaV]

Is that a tre granda telefono or are you really happy to see me?

[Argyle11]

Oh I get it! It's a pocket-phone. poŝo + telefono

[gcgupta]

a poŝtelefonon is definitely a pocket telephone, especially when compared to a very big phone. a cell phone or mobile phone is characteristically different from a landline phone because of the way it transmits and receives signals, has nothing to do with size.

[zerozeroone]

Then what is the term for a mobile phone that doesn't fit into a pocket?

[deactivated user]

Poŝtelefonego, perhaps?

[hirtiganto]

Malposxtelefono?

[Lane24]

Would a tablet be referred to as "poŝkomputilo"?

[brunofrra]

What about tablets that convert into ultrabooks?

[Rob790395]

Vi bezonas pokefonon

[tomaszym]

Saluton!
Yeah, you're right... but does it really matter? I'd say it's a phrase good as any for duolingo.

Good luck with the course!