Deductible expenses for assets such as Laptop, Monitor and Mobile for F&O business income in ITR3

Taxation
1

I have purchased a mobile on Jan 2022 and laptop and monitor in Jul 2023. Now I know that I can use WVD calculated for first year for laptop and monitor with depreciation rate of 40% and life time of 3 years and show it as expense . But I didn’t file my mobile as an asset for FY22-23.

  1. Can I file my mobile as a depreciating asset this FY23-24 by WDV calculated for second year?
  2. I use all these assets for both personal and trading purposes, so should I file 50% of those WVD values that I calculated above?