What to get/how can I make a phone mic more sensitive in order to pick up soft voices better in calls?

2 options....

  1. There are apps that will amplify the iPhones sound output on calls, BUT they have a habit of blowing the speakers. Not so good......or..
  2. Get a lavalier microphone for you mothers phone, it may improve the audio pickup. You could always return it if it doesn't help.

https://www.amazon.co.uk/Professional-Omnidirectional-Recording-Condenser-Microphone/dp/B07XRS1RDC/ref=sr_1_1?dchild=1&keywords=lavalier+for+iphone&qid=1600671325&sr=8-1

there are many available, and you may be able to get one that has 'gain' control (increase sensitivity), but chances are any of them will improve upon the built-in mic.

/r/techsupport Thread