top of page

Special Offer - 50% Discount on Unlimited SIM Cards for 3 months!

Girl Laying by Pool

Unlimited SIM Cards
Half Price For 3 Months

Unlimited Calls, Texts and Data

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

Image by Frederik Lipfert
Access O2 WiFi Hotspots
at over 14,000 locations.
Red Beanie Red Phone

99% of the UK population is covered by the Vodafone network

Why Vodafone

Over the past five years, Vodafone has put £4.5 billion into improving their network and they’re not stopping there!

Vodafone has won the 5G Innovation of the Year award at the

Mobile Industry Awards 2022 and the Mobile Innovation of the Year award at the National Technology Awards 2022

They’re constantly investing in new technologies to provide a platform for consumers and businesses of all sizes to innovate, achieve and stay connected – all backed up by their award-winning global network.

Our Plans Include
  • 1 month contracts

  • Unlimited calls and texts

  • No credit check

  • No speed caps

  • SIM, Micro SIM, and Nano SIM sizes

  • E-SIMS's available


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.

All Half Price Offers valid for new customers only with a maximum of 5 x SIM Cards per order.

Contact Us On 0800 470 0144 For 12 or 24 Month Contracts.

bottom of page