My husband has mental and physical disabilities. He has severe short term memory loss and as such wants to find out if its possible to have two of the same exact basic phones (Samsung Gusto 3) under one phone number. He's interested only because he can never remember to charge his phone until it dies and he is left waiting for it to charge for a long while causing a more serious problem like forgetting the phone at home hooked to the charger while hes away from home.
It isn't possible to have two phone numbers directly linked to the same phone. But you can set up call forwarding so that if they try calling your husband's and he either misses the call or the phone is dead, it will then forward to a second phone (which can be a Gusto 3 as well). Both phones would have their own numbers, but people could only have to call one number. If that makes sense!