For example, you can use Transphoner to add a calling card access number and code when you are in the USA and using an AT&T SIM but want to call numbers starting with +44.
When you are in the UK, using a Vodaphone SIM, Transphoner will add another calling card's access number and code to all numbers starting with +1
All of this is done during dialing, and does not change your contact's numbers.
Transphoner allows you to set rules on phone numbers. Rules have conditions and actions, and can be used to change the outgoing number on-the-fly e.g. to add a calling card access number.
Conditions allow testing which SIM you have, and which network you are connected to. Conditions can be grouped with AND and OR. Actions allow to postfix, prefix, or replace parts of the number.
Transphoner includes a UI for creating and modifying rules and a call interceptor which transforms dialed numbers according to the rules. Rules can be exported and imported using the clipboard
Transphoner is open-source (GPLv3) and does not require INTERNET permissions, so your data is safe!
If you like it, Please donate !
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Donate a lot: http://goo.gl/U0a0U4
PROCESS_OUTGOING_CALLS: Well duh!
READ_PHONE_STATE: needed for LG phones in order to get SIM information