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Unlimited Calls, Texts and Data

With our O2 Monthly Rolling SIM cards you will be on the UK's largest mobile network operator without the worry of long contracts or credit checks.

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02 Unlimited SIM Cards

Why O2

Whether you’re surfing the web or browsing from home, the office or on the go, O2 will help you stay connected to your friends, family, customers or employees.

Because O2 Reward Their Customers

O2 Priority – access a range of  
exclusive discounts, freebies and
experiences, including tickets to 
thousands of gigs and events 48
hours before general sale*

Our Plans Include
  • 1 month contracts

  • Unlimited calls and texts

  • No credit check

  • No speed caps

  • (RLAH) Roam Like At Home

  • SIM, Micro SIM, and Nano SIM sizes

  • E-SIMS's available

*Active O2 customers only. 16+. Internet access & registration required. Offers subject to eligibility criteria and availability. Terms apply, see the Priority App or

Staring at a Screen
Access O2 WiFi Hotspots
at over 14,000 locations.


Choose your SIM and proceed to the checkout to set up your monthly subscription.

You will be asked to provide your contact information and delivery details along with some information regarding your new SIM Card.

You will then submit your card details for your initial payment of only £1. This will then be credited against your first monthly charge when you active your SIM card and your monthly subscription will then begin.

You will be asked to confirm that you have read and accept all documents including The Calls Warehouse Terms and Conditions, Privacy Policy and Full Price List.

Once your order is complete, you will receive a confirmation email along with receipt of payment. This will be followed by a dispatch email once your SIM card has been shipped, within approximately 2 business days. 

How To Activate Your SIM Card – Once the SIM card has been shipped, an activation email will be sent to. Upon receipt of your SIM card, simply click the activate button in this email to activate your SIM card. 

SIM not arrived or need help activating? Contact us on 0800 470 0144.

Once activated, we will collect your first monthly subscription charge from your card details provided and set this up for future payments.

Interested In Our Half Price Offers? Contact Us On 0800 470 0144 For 12 or 24 Month Contracts.

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