Why does phone lag when talking to business

[trevorhill1959]

I have a relatively new Samsung phone on 3 network. Whenever I call a business phone number there is a lag in the phone/network responding so that the first few sounds that I make (first few letters or numbers) are not heard by the person at the other end of the call. Everything works fine when calling other mobile numbers.
I had wondered if it was a characteristic of my phone. But today I was talking with a British Gas agent and he said that the same thing happens to him, also on 3, with a different model of phone.
It is very frustrating to have to keep repeating myself because the network can't keep up.
Does anyone have an explanation and solution for this please?

[techbloke]

@trevorhill1959 

I'd expect that Three/Samsung would have picked up and corrected this issue at some point so my first advice would be to check for and apply any software updates to your phone as these may well include updated baseband code (the baseband controls the phone's interaction with networks, including the mobile network)

Directions are here https://www.samsung.com/uk/support/mobile-devices/how-to-update-latest-software-for-your-galaxy-mobi... (best to use wi-fi as the update files can be large, phone will be unavailable for about 10 minutes)