A:AnswerIn regards to the other answer you received, you can choose how many rings before the answering machine picks up. Up to 6 rings. I read that in other previous reviews. I don't have this phone but will buy it when I finish reading the reviews. Sounds like a good phone. Sorry I can't give you info for your actual question.
A:AnswerLooking at the manual, iOS is only supported for remote voice control (i.e., Siri). The Bluetooth section (page 17) on connection via Bluetooth only mentions Android phones. Seems odd to me also. Here is the manual link for reference.
https://att.vtp-media.com/products/DL/DL72XX0/DL72XX0_WEBCIB_i4.0_20210915.pdf
A:AnswerA call may be answered by any number of handsets without the need to transfer the call; e.g., you find one hand set works better than another after answering a call whether because of location or any other reason.
A:AnswerAssuming the equipment is working properly, she is likely pressing the Volume Down key for some reason. My mother-in-law used to do that accidentally because she leaned on the Volume Down part of the ring while talking.
If you are referring to the Speakerphone feature, it resets to off after every call.