Older Smart Phone (Ridgefield Park)

Posting for a friend (her words below):

"Hoping for someone's older cell phone they are not using anymore that is compatible with two of my daughter's medical devices. Her current phone is not compatible. Hoping for a kindness and a miracle."

It doesn't even need to be able to make calls. It will be connected via bluetooth and used as an interface for the medical devices. If you have something you think she can use, please send me the model and she'll check if it's compatible with the devices (she has a long list provided by the manufacturer).
Thanks so much in advance.