eSIM signal was not showing

Probably you have dual SIM/eSIM.

You may get better and prompt responses if you may kindly provide the iPhone Model that you have and the iOS version if it is known to you and re-post.

With the limited information that you have provided, It is hard to even guess the problems faced by you. 

You may get faster and better responses to your query by --> Writing an effective Apple Support Commun… - Apple ...

Please re-post with detail so that someone else can help.

Use Dual SIM on iPhone. Here are some of the many ways you can use Dual SIM: Use one number for business and another number for personal calls.

Use Dual SIM on iPhone