using ios 12.4.6 in iphone 5s doesnt have cellular option and LTE option any solution

Hello sureshselvaraj, 

Thank you for using Apple Support Communities!

I understand from your post that you have no cellular options on your iPhone. In a situation like this I recommend backing up your iPhone and reinstalling the software. The following article has the steps on how to backup your iPhone: 

How to back up your iPhone, iPad, and iPod touch - Apple Support

By using the steps as listed under the heading "Put your device in recovery mode and set it up again" from the following article you can reinstall the software on your iPhone: 

If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support

Best Regards.

sureshselvaraj,

If you have restored your iPhone as new and the issue persists, then you may need to contact Apple Support for additional assistance.

Contact Apple Support

Take Care.