Hand phone" is not English — it is a communication trap

I keep seeing Korean learners confidently say "hand phone" in English conversations, assuming it works everywhere. The problem is that outside Korea, nobody says this — the standard term is "mobile phone" or "cell phone." Using Konglish like this does not make you sound fluent; it makes you sound confused when the other person does not understand you. If your goal is Band 7 or higher, you need to unlearn these false friends now rather than correct them later.