Ok....so I have this older phone that doesn't have a slot for a SIM card but i really like its a tough phone but i was forced to switch to SIM cards and the phone has just been sitting around. Is there any possible way that i could use the old phone and my new phone that has the sim card and have them both be on the same phone number? Is that even possible? I mean the one phone is that old that it doesn't have a sim card slot...and if i could have both would my sim card be hurt in any way?