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telephone; phone
電話をかける
to make a phone call
電話番号を教えてください
Please tell me your phone number
Can refer to both the device and the act of calling
'電話' is used for both the device and the act of calling. For specific types of phones, use '携帯' (mobile phone) or 'スマホ' (smartphone).
In formal contexts, use '電話をかける' (to make a phone call). In informal speech, you might hear '電話する'.
Combination of 電 (electricity) + 話 (speech/conversation)
'電話' is the most common term for telephone in Japanese. '携帯' refers specifically to mobile phones, while 'スマホ' is short for smartphone.