For Users on the Telstra Network. I used the following infomation from Telstra to increase my ringtime to 20 seconds before going to voicemail on my S22 Ultra. Very simple proceedure to follow.
How to extend the ring time on Android
To extend your ring time using an Android handset, you’ll need to open the Phone app in your phone’s menu and then dial a code.
You’ll want to change one part of the sequence – that’s how long you want your phone to ring for. You can choose for your phone to ring for 15, 20, 25 or 30 seconds before diverting the call to voicemail.
Here’s how:
Open the Phone app on your phone.
Type the following: * * 6 1 * 1 0 1 * * [15, 20, 25 or 30] #
Press the call button.
So, if you wanted to make sure your phone only rings for 15 seconds before diverting, you’d open the Phone app and type * * 6 1 * 1 0 1 * * 1 5 #.
Once you’ve done the steps above, you’ll then see a pop-up appear with a message that says “Call forwarding successful”.
To find out how long your phone is currently ringing for before diverting to voicemail, you can dial * # 6 1 # in your Phone app. You’ll see a pop-up appear that tells you your voicemail phone number, and how many seconds your phone will ring for each call that comes in.
