如何区别on phone和by phone?

如何区别on phone和by phone? by phone 和 on the phone有什么不同? on/by the phone by phone 与 on the phone on the phone还是by the phone by the phone.on the cell phone和phone call的区别 on phone 与on the phone的区别是什么? call on the phone和make a call的区别 talk on the phone和speak on the phone telephone和phone的区别 over the phone和on the phone哪个对