Mi A1 is a mid range smartphones and this runs on stock android, I recently get oreo update on my phone and it works smooth.the cellular call quality is good enough as i’m not faced any distortions.it is a good looking smartphones, the most impressing thing is the dual camera setup which is giving awesome photos during daylight condition and during night time it is good, but the bad thing is I am not impressed with front camera which produces low quality images which is not clear, I chose golden which looks royal and pretty decent, it has many features such as IR blaster, fingerprint scanner etc ., it is also used as rough, overall it is a good mobile and value for money!