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Here's how to block your number when calling someone on both an iPhone and an Android. ... Select Additional settings for the SIM card you'd like to hide your number for. 6. Select the Caller ID ...
Kim Komando offers tips to block or hide their phone numbers when making calls. Blocking your number can go a long way in stopping annoying robocalls. 5 ways to block or hide your number when ...
A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
However, if you get a call from a phone number or area code you don’t know, it’s likely best to avoid picking up the call and research the following before you call back: ... 30 Scam Phone ...
The IMSI is often used as a key in the home location register ("subscriber database") and the MSISDN is the number normally dialed to connect a call to the mobile phone. A SIM has a unique IMSI that does not change, while the MSISDN can change in time, i.e. different MSISDNs can be associated with the SIM.
You can block a phone number or contact on Android from the Phone app, your contacts list, recent calls log, and more. Here's how to do it. How to block a number or contact on any Android device