Hello, I am looking to upgrade my current secondary phone SE 2016 to the 12 mini. The battery on my SE is really losing its capacity and is down to 2 days with my usage. It is a 3 year old device (bh 93%) and i am using it just for texting, calls and WA/viber communication, it used to last for 3-4 days, but after upgrading to ios 15 its really losing % on any screen on time and fast... How much battery will i be able to get from the mini considering its bad reputation battery-wise... Any opinions...