Lots of bugs Some or the other error on every phn. Review on Xiaomi Mi A1

Hi friends. I and my cousin brother both of us bought this phone on 18 November means it is been 1 month and Iam here with the problems both of us faced within this one year.

Talking about the positive aspects - one thing which I found or which impressed me was its camera - it is powered with a rear camera of 12 MP which captures very high quality image and the shots appears as if they are taken in a DSLR camera. There is a bit of noise seen on zooming but the colour reproduction is excellent.Second thing I need to tell as its positive side is the 4 GB RAM. In my phone this 4GB RAM works really well. There has no slowing down of device even though I use multiple apps at the same time. But in Brother's phone it is really just the opposite. His device hangs everytime.

We just took it to the service centre and they said that it is due to 90% of the internal memory being used ( still I dont know what is the relation between Internal memory and phone's performance) and as they said so we did a factory reset data and still the same error is seen.

Now regarding the battery , the phone had a 3080 mah battery. And its now regarding my phone that Iam speaking. In my phone the battery lasts good. But when we need to charge the device we should switch it off and then charged. No charging is taking place when the phone is switched on and plugged. I really feel it is one among the worst type of bug I had ever seen.

Rest all features I found impressed so from this I understood that each product has got some or the other errors and if you are planning to buy this product you can't be really sure which type of error your device may have.