Is this sentence correct?

dilshiJust putting a memo in the phone.

That is not a complete sentence.

I wanted to say, it is more easy to write a memo in the phone than using a diary. How to say that correctly??

I'd say "It's easier to write a memo using a phone compared to a diary". I'm not a native speaker. So I suggest you wait for native speakers to chime in.

The reason I posted here is to help evaluate my skills too while also helping the OP.

dilshi....I wanted to say,
It is more easy to write a memo in the phone than using a diary.

It is easier to write a memo in the phone than (it is) to use a diary.

Thank you..