We have a professional customer services and technical support team to assist you and attend to your needs at all times. We provide efficient, expert and friendly support to ensure zero defects and immediate service recovery if problems occur.

Frequently asked questions

You will find answers to most frequently enquiries in this section. Please click here to view this section first.

Contact us by telephone

You can contact us our 24-hours customer service hotline: 0044 207 0605043.

Contact us by email

You can send all your enquiries to sim@call28.com.

Download user guide

Download user guide (Pdf Format)

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