switching phones

Hello,
I have 2 identical phones (LG REBEL LTE). One I have been using and the other is new and has never been used. Can I take the SIM card out of the used phone and put it in the new phone? Will this cause any problems? Will my phone number transfer over to the new phone? Will my texts, contacts, and pics be on the new phone?
I have 2 identical phones (LG REBEL LTE). One I have been using and the other is new and has never been used. Can I take the SIM card out of the used phone and put it in the new phone? Will this cause any problems? Will my phone number transfer over to the new phone? Will my texts, contacts, and pics be on the new phone?