I know it is a cellphone, but I think it is mostly referred to as a "phone" now, and I think "I lost my phone" should be accepted. What do you think? I only call my mobile or cellular for a phone at least.
In England no-one uses the word cellphone. Mobile or just phone are both the most common words in the UK.
I said cellular phone and Duo marked it wrong.
phone should be accepted
Still not accepting the correct UK English mobile, or mobile phone. Needs correcting
Neither "mobile phone", nor "mobile telephone" was accepted. [UK native speaker]