Choosing a connectivity provider for your business is as much about who you're buying from as what you're buying. The Three Unlimited 5G Business SIM, available from £17 through GleeSim, pairs unlimited data and a dynamic IP with the kind of straightforward setup and ongoing support that businesses actually want from a SIM provider.

Who Is GleeSim, and Why Does That Matter?

GleeSim Connect has been supplying corporate and personal connectivity solutions since 2006, long enough to have seen mobile networks evolve from 3G to full 5G standalone. That history matters when you're choosing a business SIM: GleeSim isn't reselling a product it doesn't understand, it's built a catalogue spanning business phones, SIM-only plans, IoT connectivity and international travel eSIMs, all under one roof. For a business owner who wants a single point of contact rather than juggling multiple providers, that breadth is part of the appeal of buying through GleeSim rather than going direct to a network.

What's Inside the GleeSim Three Unlimited 5G Business SIM

Unlimited Data Without the Small Print

The plan runs on the Three network with unlimited data included as standard, aimed at businesses that can't afford to watch a data meter while handling cloud applications, video calls or large file transfers. GleeSim positions this SIM specifically for businesses rather than casual personal use, so the allowance is built around the reality of a working day rather than occasional browsing.

A Dynamic IP for Remote Access and Cloud Tools

Each SIM comes with a dynamic IP address, which is reassigned periodically rather than staying fixed. As Fortinet's networking glossary explains, dynamic IP addressing is generally more cost-effective and easier to maintain at scale than static IP, which suits businesses connecting multiple devices to cloud platforms and remote access tools without the overhead of managing fixed addresses for each one.

Up to 100Mbps for Real Business Workloads

GleeSim lists download speeds of up to 100Mbps on this SIM, enough headroom for video conferencing, cloud-based software and syncing larger files without the connection becoming the bottleneck in a working day.

Flexible Contract Lengths From GleeSim

Rather than pushing every customer onto the same commitment, GleeSim offers this SIM across 1-month, 12-month and 24-month terms. That flexibility suits businesses at different stages: a short-term project might only need a month of connectivity, while an established team might prefer the lower ongoing cost of a 24-month plan. It's a structure that reflects how GleeSim approaches business connectivity generally — matching the term to the need, rather than the other way around.

Why Buy Through GleeSim Rather Than Direct?