Xiaomi India — update mi a1

Sir
I have not get february update on my mi a1 handset. My handset is running on android oreo 8.0.0 and security patch level jan 1 2018. My charge talk time of battery bad and finger print sensor is work slow and when open camera take time when call anybody take time after oreo update.in this circumvent i want latest update version on my mi a1 handset. I call this no. [protected] and say my problem but