Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very bad quality! Stop working after one week!

Horroable ring tune!Very short battery life, 40 minutes talking at night and next morning battery dies!System crash every 2 days, needs to reboot!During taling phone getting very hot(after talking for 1 hour my ear feels like burning)After one week totally stoping working and become a piece of plastic JUNK!