All articles ← Knowledge Base Are there any hidden charges? Can I use Dial123 from a Pay As you Go SIM Card? Can I use my mobile and landline? Can my account Auto Top-Up? Do I need a computer to use Dial123? Does Dial123 rates including VAT ? How do I add credits to my account? How do I get billed from Instant Dial Service? How does Dial123 call back works? How does Dial123 works? How to activate 3G/4G/WiFi App? How to install Dial123 app? I hear the message that my phone number is not registered. The rate has changed? What are Instant Dial charges from BT or non BT landline? Will my Credits ever expire?