Samsung Galaxy A21s
Help and Support for

Samsung Galaxy A21s

Choose a help topic

Block phone number on your Samsung Galaxy A21s Android 10.0

If you don't want to receive calls or messages from certain phone numbers, you can block them. If you receive a call from a blocked phone number, the caller will hear a busy signal.

Buying online

Latest phones

Help and support

Vodafone UK

Registered in England and Wales. Company No 01471587. Registered Office: Vodafone House, The Connection, Newbury, Berkshire, RG14 2FN.

*Annual Price Increase: The monthly cost will increase each year on 1 April by £2.50 for Pay monthly plans with Airtime/Data, and £3.50 for Home Broadband plans. This doesn't affect Device Plans. More information: vodafone.co.uk/pricechanges

© 2026 Vodafone Limited is authorised and regulated by the Financial Conduct Authority for consumer credit lending and insurance distribution activity (Financial Services Register No. 712210)