Hi Anmol,

The facility to submit mobile or cellular phones at the respective examination centers for the time being of the examination entirely or solely depends on the discretion of the management of the center where the examination is taking place.

Nevertheless, some examination centers do have the facility to safe keep the mobile phones of the students while most centers don't so my suggestion would be not to carry any mobile phones inside the examination center and rather give it to someone who would accompany you for the examination for the duration of the exam. The admit cards of most exams usually have a set of guidelines which clearly dictates students to not carry any mobile phones or electronic devices to the examination centers, so please refer to the guidelines once before the exam.

BEST WISHES!