not at that same time.
you can put the iPad 1/2 sim in the new iPad however the new iPad won't get 4G it will only get 3G with the old simcard.
To get 4G speeds you can simply just sign into your cellular account on the new iPad and it will deactivate the old iPad and activate the new iPad on your account.
Ok thanks for the fast response! Kind of a bummer though...
Just like how they make you pay for each cellphone you have, they charge you for each iPad you have.Ok thanks for the fast response! Kind of a bummer though...