Instruct: Classify the given Amazon review as either positive or negative.
Query: Caller ID doesn't work well.

Big disappointment!! At the start of most calls, there's a weird echo that takes about 30 seconds to subside. Also, the caller id is awful!! Most times the caller id only displays "External Call" rather than listing a callers name and number. I've never had this problem before with other phones, and felt that if Siemens cannot even get caller id right, they have no right releasing this phone! Awful!