1 Answer. There's an app called Auto Redial that you can configure to keep calling the same number over and over. Note that I added ,1,1 after the number. This makes the phone automatically dial 1 twice, once the call is connected.
*67 - Caller ID Block: Hides your phone number on Caller ID systems. *69 - Call Return: Redials the last number that called you. *70 - Call Waiting: Places your call on hold so you can answer another. *72 - Call Forwarding: Forward your call to another phone number.
All major phone manufacturers have the double-tap redial feature in the built-in phone app, where you tap the call button after ending a call to bring the number up again, then one more tap to call it. But that's a lot of tapping on your part, and that's where third-party auto-redial apps come in.
Pick the phone up and at the dial tone, press *66. If the line is free, the call will go through. If the line is busy, you may hear a message. The feature will retry the line every 60 seconds for the next 30 minutes.
*66: Busy Call Return
The Busy Call Return service allows you to call a busy line over and over automatically for 30 minutes. When the line becomes free, your phone will notify you with a distinctive ring.
Australia: *10# for Telstra services or *69 on Optus HFC Telephony network. This only allows one to return the last unanswered call, and can cost 35 cents per use.
If you're out of the office, calls can be automatically forwarded to a coworker. The simultaneously ring option is handy for people on the go. When you get a call it rings on two phone numbers at the same time.
Press the "Dial" or "Call" button twice quickly. This method is the most simple and available on almost every phone. Find the contact that you want to call in your address book, then press "Dial" or "Call" as usual so that the phone will dial the number. Wait for the phone to pick up.
*67 does not work when you call toll-free numbers or emergency numbers. While using *67 works on smartphones, it must be entered each time you dial a number. Most cellular carriers offer a way to block your number on all outgoing calls using the Android or iOS device settings.
If I dial *67 can I still get through if I'm blocked? Based on our tests in April of 2022, this still works. If you dial *67 then the recipient's full ten-digit phone number, your call will ring through. The recipient's caller ID will say 'Unknown Caller' or something similar.
Dial *67 before the number you want to call. The receiver will not be able to see your phone number, and will see "No Caller ID," "Private," or "Blocked."
Thailand Country Code 66 - Worldometer.
*57 is a call tracing service offered by most phone companies. It allows you to easily trace calls made to your phone number. Essentially, *57 records the calling number and other identifying information such as the date and time of the call.
Selective Call Acceptance
Other callers will hear a message that you are not accepting calls at this time. To activate, dial *64. Listen for an announcement to tell you whether the feature is currently on or off. The recorded voice will then tell you how many numbers are on your call acceptance list.
To block caller ID for an individual call, dial 1831 (or #31# from a mobile) then the number you are calling. Generally, this will make sure the person you are calling will not see your number.
With third-party applications such as Truecaller, you can simply enter a valid number to check if it is busy. On keying in a number, you get to see a red busy icon beside the number. Therefore, it is an easy way to know if someone is busy on call without you calling that number at all.