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Mobile Sim-Only

SIMs made simple — and fully under your control
Three UK
Network / Operator: Three UK

Three UK V&D Unlimited

Month-to-month rolling 30 Day with Unlimited use with Voice & Data
Data Allowance: Unlimited (1TB Fair use)
Unlimited UK Calls
Unlimited UK SMS
£24.98
per month inc. VAT
Set up fee: £0
O2
Network / Operator: O2

O2 V&D Unlimited

5G Enabled
Unlimited UK Data
Unlimited UK Minutes
Unlimited UK Texts
2000 UK to Europe Minutes
2000 UK to Europe Texts
£27.98
per month inc. VAT
Set up fee: £0
Vodafone
Network / Operator: Vodafone

Vodafone Unlimited Voice & Data

Data Allowance: Unlimited Unlimited UK Calls Unlimited UK SMS
£35.99
per month inc. VAT
Set up fee: £0

Unlimited UK standard calls and texts.

Chat and text as much as you like to standard UK landlines and mobiles. No per-minute surprises, just straightforward unlimited calling and messaging for everyday use. Fair usage policy applies; premium, international, and non-standard numbers excluded.

Multiple Carriers, One Provider

Choose from EE, Vodafone, O2, and Three. Mix and match across carriers to get the best coverage for every site, all consolidated into one bill, one account.

Track all your usage in one place.

Our new client control panel puts everything about your SIMs in one clean, powerful view. See live monthly usage at a glance with a gorgeous liquid meter, clear operator badges, and status pills that make health obvious.

Manage the SIM linked to your service—run a Network Sync to refresh connectivity, remove the Adult Content Bar, scan an eSIM QR code, and view rich SIM details like last-seen network and country.

Unlimited UK standard calls and texts.

Connect your new business landline number to WhatsApp for business so you can start messaging your customers professionally.

Mobile Sim Estate For Business

Manage your fleet of sim cards for you and all of your employees with our fully self-service, scalable mobile management interface

Fairly Priced Unlimited Data

No confusing overages or hidden costs — enjoy unlimited business mobile data at fair, transparent rates. Designed for teams that need flexibility without worrying about usage caps.

Mobile FAQs

Here’s some answers to our most popular business mobile questions.

Yes. Giant partners with all four of the UK’s major mobile operators – EE, Vodafone, O2 and Three. Giant’s site emphasises that you can “mix and match across carriers to get the best coverage for every site,” yet receive a single bill and have one account manager. The ability to select from multiple carriers means you can tailor coverage for each office or employee without juggling multiple providers.

Yes—remove the profile from the old device and re-issue/scan the QR on the new one.

Use Remove Adult Content Bar in the panel. (Subject to policy.)

  • Open your service, find eSIM QR Code, and scan it with your device camera.

  • iOS: Settings → Mobile Data → Add eSIM.

  • Android: Settings → Network & Internet → SIMs/eSIM → Add eSIM.

  • The panel shows the status so you know it’s installed and ready.

For voice‑and‑data (V&D) SIMs, unlimited calls and texts are standard. Giant advertises “unlimited UK standard calls and texts”, so you don’t need to worry about running out of minutes. This approach is consistent with wider industry practice

Yes. In addition to plans with specific data allowances, Giant offers fairly priced unlimited data. Their site states there are “no confusing overages or hidden costs – enjoy unlimited business mobile data at fair, transparent rates,” designed for teams that need flexibility without usage caps. As with most operators, fair usage policies may apply to unlimited data plans, so it’s worth confirming any limits when you order.

Giant offers two categories of business SIMs:

  • Voice & data (V&D) SIMs – These include voice minutes, texts and data for smartphones. Plan options on the site show V&D SIMs with different data allowances (for example, 2 GB, 10 GB or unlimited data) and no set‑up fee.

  • Mobile broadband (MBB) or data‑only SIMs – These are designed for internet‑only use cases. Giant notes that data‑only SIMs are “ideal for routers, tablets, laptops, IoT devices and backup connections”. This matches the industry definition of mobile‑broadband SIMs: they provide high‑speed data for devices such as laptops and routers and are commonly used for temporary connectivity, pop‑up offices and consumer electronics

Yes. Giant highlights that it offers eSIMs for instant deployment, allowing you to provision new connections over the air without waiting for a physical SIM card. An eSIM is an embedded chip that can store multiple carrier profiles; mobile network operators can activate and manage it remotely using remote SIM provisioning. This makes it ideal for remote staff or rapid deployments because employees can download a profile and be connected immediately.

Managing a fleet of SIMs can become complex as your team grows. Giant provides a SIM Estate Management portal: a self‑service, scalable interface that lets you manage all your employees’ SIM cards in one place. Through this portal you can monitor usage, apply restrictions, order replacements and keep track of device inventory. Businesses with many mobile users benefit from a unified dashboard instead of dealing with individual accounts for each SIM.

Yes. Keeping your number when switching provider is called “porting.” According to Ofcom, to switch and keep your old number you need to request a Porting Authorisation Code (PAC) from your current provider and then give it to your new provider.

Giant communications logo, broadband and connectivity company based in the UK