Yes, additional numbers can be added to your SIM for £1 + VAT per month per number.
Please note that you can only select one of the numbers on your SIM as the outbound caller ID (i.e. what people will see when you make a call out).
If you have multiple mobile numbers on your SIM they will all be able to receive calls but only one will be able to send & receive SMS.
If you would like to add an additional number to your existing SIM (either a new one or one you already hold with another supplier) please email our support team (support@onsim.uk) to request this.
If this is the second number you are porting onto our service, please note that there may be a charge to port this number over to the service.