Which unlimited 5G data SIM do you need?
| If you need | Choose | Network | Plans (per month) |
|---|---|---|---|
| Unlimited UK data for routers and backup internet (650GB fair use) | O2 Unlimited Data Business SIM | O2 | 24 months £19.0012 months £25.003 months £27.00 |
| Unlimited UK use with roaming in the EU, USA, Canada and Jamaica | O2 Unlimited Calls, Texts & Data SIM | O2, plus roaming in the EU, USA, Canada and Jamaica | 24 months £19.9912 months £25.003 months £35.00 |
Plans are available on 24 or 12 month terms, with a 3-month or 1-month option on some plans. The 24-month term has the lowest monthly price. All prices exclude VAT and delivery. The O2 Unlimited Data Business SIM has a 650GB monthly fair use limit.
What an unlimited data SIM is used for
- Office and home broadband Run a 4G or 5G router where fixed broadband is slow or not available.
- Backup internet Keep a failover line ready if your main connection drops.
- Laptops and tablets Work anywhere in the UK without tethering to a phone. See our tablet and laptop SIM cards.
- Temporary sites Get a pop-up shop, event or site cabin online. See construction site WiFi for router rental.
Do you need 5G?
These SIMs use 5G where there is coverage and fall back to 4G where there isn't. Your router or device must support 5G to get 5G speeds. The SIMs use a dynamic IP address. If you need to reach a device remotely on the same address every time, choose a fixed IP SIM instead. If coverage at your site is patchy, a multi-network SIM can switch to a stronger network.
GleeSim Connect has supplied business connectivity since 2006 and is based in Livingston, Scotland, supporting customers across the UK. Not sure which plan fits? Contact our team or read our SIM and connectivity FAQs.
Unlimited 5G data SIM FAQs
Is the data on an unlimited 5G SIM really unlimited?
Most of these plans have no data cap. The O2 Unlimited Data Business SIM has a 650GB fair use limit a month, which is more than most routers use. Check each plan's terms before you order.
Will an unlimited data SIM work in my router?
It works in any unlocked 4G or 5G router that accepts a standard SIM. Enter the APN settings if your router asks for them.
Can I use an unlimited data SIM abroad?
The O2 Unlimited Calls, Texts & Data SIM includes roaming in the EU, USA, Canada and Jamaica. The other plans are for UK use.
What is the shortest contract?
The Three Unlimited 5G Data SIM has a 1-month option, and the O2 plans have a 3-month option. Longer terms cost less per month.