To use *69 on Android (to redial the last caller), simply open your phone app and dial *69 like a regular call, then press the call button; it's a service that connects you back to the last number that called you, even if it was private, though it may cost you and isn't available on all mobile carriers as it's more of a landline feature.
To call back the last private number that called you – whether you answered it or not -- simply dial *69 and it will dial it back. It will also unmask the number, if it's been blocked from caller ID.
The USSD code *#62# is used to check the number your calls are forwarded to when your phone is unreachable—such as when it's off or out of coverage. This code is provided by your cellular service provider and is commonly used for troubleshooting or verifying call forwarding settings.
Both the *69 and the *57 features are built into landline phones only.
Yes, *69 can work in Australia for Call Return on some networks like Optus, but Telstra uses *10# for a similar service, and it often involves per-use charges; however, mobile networks often store caller ID, making landline-style codes less universal, with features depending on your specific provider and service plan.
The only way to see a call history from a blocked number is to unblock the number. They will be added to your regular call list, and you will be able to see any missed calls you receive from the number.
Dialing *#21# on your phone checks the status of your unconditional call forwarding, revealing if your calls, texts, or data are being redirected to another number without you knowing, often without leaving traces on your phone bill; it's a standard network code to see your carrier's call forwarding settings, not a definitive "hacking" tool, but useful for detecting unauthorized forwarding.
To turn off Call Forwarding from your mobile phone, call *73. You should hear a confirmation tone or message that may sound like a busy signal to let you know Call Forwarding has been turned off.
7 Proven Ways to Make Your Phone Unreachable
Block your phone number when you need privacy, but remember that many people won't answer calls from unknown numbers. Sometimes it's better to let your number show, especially for important business calls or when trying to reach someone who's expecting your call.
The code *31# is a Universal Service Code (USSD) used on mobile phones to enable your Caller ID (show your number) on a per-call basis, especially if it's otherwise hidden or to re-enable it, contrasting with #31# which hides your number (shows "Private" or "No Caller ID") for that single call; it's a way to manage your privacy on calls.
Firstly, the service works only for the most recent incoming call that you missed. If you receive multiple unanswered calls, *69 will only redial the last one. Secondly, if the caller's number has been blocked, *69 will not provide any information beyond what is available through voicemail or other means.
Dialing *77 on your phone activates Anonymous Call Rejection, blocking incoming calls from private or blocked numbers, making anonymous callers hear a message to hang up and try again. It's a landline/VoIP feature (like AT&T, CenturyLink) to stop spam/prank calls but can sometimes vary by carrier or state, potentially connecting to emergency services (like *87 to turn it off).
Call forwarding on Android
Hide your number using Android settings
Open Settings > Supplementary services or Calls. Under Caller ID, select Hide number or Never. Your number will be hidden for all outgoing calls. To display your number for a specific call, type in *82 before you dial.
Quick Tip: Test Your Samsung Phone with *#0*# Before buying a Samsung phone, use the code *#0*# to check its hardware! This secret menu lets you test the screen, buttons, speakers, sensors, and more. It's a quick way to ensure everything works perfectly and avoid issues later.
Unusual sounds or echoes during calls
If you're noticing weird clicking sounds or high-pitched hums on multiple calls across different locations and with different people, it could be a sign that someone is eavesdropping or tracking your calls.
Dial *#62# to check if your voice or messages are being forwarded. Then dial ##62# to cancel #reject #TechSavvy #changeisgood.
When a number is blocked, any incoming messages from that number are not delivered to your device, meaning they do not appear in your messages app at all. Once you unblock the number, you will only receive new messages sent after unblocking.
Yes, *69 (Star 69) tells you who called by redialing the last number that called you and revealing the number, but it only works if the caller didn't block their ID using features like *67, and its availability depends on your phone carrier and service plan. It's a service that connects you back to the last caller or gives you their number, but modern smartphones often display this in the recent calls log anyway, making *69 less essential now.