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iPhone extend ringing before call goes to voicemail




Wednesday, March 05, 2014
Vodafone UK

1. Enter * * 61 * 121 *
2. Enter time between 5 and 30
3. Then # send.

Example: **61*121*25# SEND sets it to 25 seconds.
Timing increase is with steps of 5 seconds, 30 seconds max.