I don't even think about the battery. 2.3 days is ok.
Disadvantages:
The call performance is poor, not only the voice is low, but also when I talk to the other party, the other party always says that I am too noisy to hear clearly. I've tried many people, but up to now only a few people can hear clearly, and I don't know why. As a result, the mobile phone is fine and boring!
Summary:
A mobile communication tool is not a good mobile phone if it can't keep normal calls.