No. Metro 350 is a 2g mobile phone and hence do not support Jio sim card.
Samsung Metro 350 has quite good battery backup. It comes with 1200 mAh removable battery and on a single charge it can last up to almost almost 4 days.
Metro 350 has 1200 mAh removable battery.
Samsung Metro 350 has 1000 contact storage capacity.
Yes, Samsung Metro 350 does have the alarm function.