About Course
Unwanted calls and texts can be annoying and sometimes frightening. Learn how to block a number on an iPhone or Android phone, how to silence or screen unknown callers without missing important calls, and how to register your mobile with the Telephone Preference Service.
Tutwoo is an independent learning provider. This course gives general, step-by-step guidance for everyday technology. Screens and menu names vary between devices and software versions, so check your device maker’s help pages if something looks different.
© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.
Course Content
Course Lessons
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Blocking a number
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Silencing or blocking unknown callers
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The Telephone Preference Service and reporting
Sources & Further Reading
Final Assessment
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