What is i missed his call should i call him back?

If you missed someone's call, it is generally considered polite to call them back as soon as you can. Depending on who the person is and the nature of the call, you may want to prioritize returning their call promptly. If it is a work-related call or from someone who may be worried about your safety, it is especially important to get back to them quickly. However, if it's a call from a friend or family member who may just want to chat, it is okay to take your time getting back to them. Ultimately, it's important to use your judgement and consider the level of urgency of the missed call before deciding when to return it.