I am looking to switch on my Samsung mobile after a few months Can you help?

You would do well to charge the battery first.

As for switching on I'm not sure - my previous 'phones were by Nokia - one had a button on the side and the other was switched on and off by pressing and holding the end call button - your phone may be different.

You do not mention the model of your 'phone.

Good Luck...
September 2015