Telecoil
A small coil inside the hearing aid that picks up sounds directly from compatible phones and hearing loops. These may be used in public places. Manufacturers may use the following terms:
- t-coil
 - audio induction loops.
 
Mobile phone and device connectivity
Connect your hearing aids with Bluetooth® devices. May be used for phone calls, audio streaming and hearing aid control.
Manufacturers may use the following terms:
- streaming
 - made for iPhone (MFI)
 - made for Android
 - bluetooth.
 
Accessory connectivity
Links your hearing aids to other hearing devices. These can include remote microphones and TV streamers.
Manufacturers may use the following terms:
- app connectivity
 - bluetooth
 - streaming
 - TV streamer
 - remote control.
 
Phone assistive technology
Detects when a phone is being used and adjusts hearing aid settings for you.
Manufacturers may use the following terms:
- automatic phone detection
 - telephone mode
 - telephone program.