Hi rupaksat,
Thanks so much for using Apple Support Communities. It's great to have you here. I see from your post, your iPhone will power on but gets stuck during startup.
If you use the steps in the following article under the section "If your device turns on but gets stuck during start up" are you able to resolve your issue.
If your iPhone, iPad, or iPod touch won't turn on or is frozen
If you've attempted those steps and still experiencing this issue, you can Contact Apple Support for additional assistance.
Kindest regards.