How to block my phone number

Man receiving an annoying, unsolicited phone callWhat to do, and what not to do? Do not call the number back, and do not give out any of your personal information. Sometimes, merely calling a number back will verify that you are accessible and expose you to more risk. Some phone companies have blocked phone number listings you can use. Ask them to add the number that called you to your account (or use the automated service to do it yourself). Here are some common providers that offer this service:

If your mobile device was issued by your company

If you are also allowed to use it for personal calls, including during your holidays, contact the relevant department within your organisation and find out about:

  • Roaming charges (so you don’t run up astronomical phone bills for your company while you’re away). Roaming charges won’t be completely abolished until June 2017, although they’ll be limited from mid-2016.
  • Security procedures in the event of loss or theft
  • What do you if your SIM card is blocked.

If you use your device for both business and personal purposes and handle the contract yourself, the information below will be useful.

The IMEI code: to block a lost or stolen handset

This is a 15 or 17-digit number that is unique to each phone. You will need to give this number to your telecom provider so they can block your SIM card if your handset is lost or stolen.

  • How to get your IMEI code

It usually comes with the packaging of your phone and also features on your bills. However, if you don’t have the necessary paperwork with you, the easiest way to get this number is by dialling *#06# on your phone. The IMEI number will come up immediately. Make a note of it somewhere else than on your phone.

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For tablets: IMEI and serial numbers are usually marked on the back of the device, or on a label on the box. Again, make a note of it and keep it somewhere safe.

PIN and PUK codes

The PIN (Personal Identification Number) is a 4-digit personal security code (the one you have to enter every time you switch your phone on). The default code is 0000 but you should change it as soon as possible by going into the security menu of your phone settings.

If you go away on holiday without your phone, make a note of your PIN code before you go: it’s amazing how a few weeks of relaxing on the beach can wipe your memory!

If you or a thief make three failed attempts to enter your PIN, your SIM card will be automatically blocked. This is where the PUK (Personal Unlock Key) code comes in handy: it enables you to reactivate your SIM card.

  • How to find your PUK code

Some operators provide this initially with the SIM card. If not, contact your telecom provider either on line or by telephone. You will be asked for your client code and/or bill.

Remotely deleting your data

There are also a range of apps and online services to enable you to erase a lost device (provided you’ve downloaded the app or enabled the Share My Location feature).

  • Apple: this is done via your iCloud account, so you’ll need your Apple ID. The device will be erased immediately if it’s online. If it’s offline, the remote erase begins the next time it’s online.
  • Android: you can erase your devices via the Device Manager. Only the data stored on your Google account can be restored. Google stipulates that any data on the SD card might not be deleted.
  • Windows Phone: you can reset your device online via your Microsoft account.
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Block phone number services by provider

First, you’ll want to block the phone number from calling you again. Each service provider has its own way of doing so. If you use AT&T, CenturyLink, Comcast, Time Warner Cable (TWC), or Verizon take a look at this article and follow the instructions to block a phone number. Here’s a list of phone providers and the maximum amount of numbers you can block through them.

  • AT&T Call Blocking – 20
  • CenturyLink Call Rejection – 25
  • Comcast Call Screening – 12
  • TWC Call Blocker Accept and Call Blocker Select – 30
  • Verizon Call Block – 12

After you’ve block the phone number it should prevent the call from coming through. However, if you are unable to use Caller ID blocking, we recommend you simply ignore the phone calls.

Block phone numbers on your cell phone

Some cell phones may allow you to assign a silent ring to a particular set of numbers or even block the numbers. Here are instructions for blocking phone numbers on HTC, iPhone, LG, and Samsung phones.

Blocking calls on HTC

  • Open the Phone app
  • Click Call history
  • Do a long press on the phone number you want to block
  • Click Block contact or Block caller

Blocking calls on iPhone

  • Open the Phone app
  • Click Recents
  • Click the i icon next to the number you want blocked
  • Click Block this caller

Blocking calls on LG

  • Open the Phone app
  • Click the 3-dot menu icon located in the top right corner
  • Click Call settings
  • Click Call reject
  • Click Reject calls from
  • Select the Plus icon and add the number you want to block
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Blocking calls on Samsung

  • Select the Phone icon
  • Click More located at the top right
  • Click Settings
  • Call blocking and Call rejection lists are located here, select which list you’d like to manage

or

  • Select the Phone icon
  • Click Log
  • Select the phone number or contact
  • Click More
  • Click Block settings
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