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Mobile Sim Deals

Flexible SIM only deals
Stay connected for less

Choose from our best SIM only packages and enjoy unlimited calls & texts with generous 4G/5G data on the UK’s top networks. Keep your phone and get a cheap SIM card only contract.

Special offers

O2 logo

O2 6GB

Buy now
6GB Data (5G)
12 months Contract
£50.00 Deposit
£36.00 / quarter
for 3 months, then £45.00 Price details
Unlimited Texts
Unlimited Minutes
£221.00 Full contract cost*
No Creadit Check

Full contract costs are calculated using the current monthly price. They do not take into account annual price hikes from this provider.

*Varying factors can affect your average speed. Average speeds are achievable for 50% of customers between 8-10pm. We encourage you to check your likely speed with the provider.

Vodafone logo

Vodafone Red 2GB

Buy now
2GB Data (5G)
12 months Contract
£9.00 / month
for 3 months, then £11.00 Price details
Unlimited Texts
Unlimited Minutes
£126.00 Full contract cost*
No Credit Check Free roaming up to 30 GB

Full contract costs are calculated using the current monthly price. They do not take into account annual price hikes from this provider.

*Varying factors can affect your average speed. Average speeds are achievable for 50% of customers between 8-10pm. We encourage you to check your likely speed with the provider.

O2 logo

O2 SIM Low User

Buy now
0.5GB Data (5G)
1 month Contract
£8.00 / month
Price details
Unlimited Texts
500 Minutes
£8.00 Full contract cost*
No Credit Check Free roaming up to 30 GB

Full contract costs are calculated using the current monthly price. They do not take into account annual price hikes from this provider.

*Varying factors can affect your average speed. Average speeds are achievable for 50% of customers between 8-10pm. We encourage you to check your likely speed with the provider.

No packages match your filters.

benefits of sim only deals

Why choose a SIM only plan?

SIM only plans offer a cost-effective way to stay connected without paying for a handset. Enjoy generous data, minutes, and texts at a lower monthly cost while keeping the flexibility to upgrade or switch easily.

  • Lower monthly cost compared to traditional contracts
  • Keep your existing phone
  • Flexible plans with generous data options
  • Short-term commitment, more freedom
  • Choose from multiple network options

How to get started

Easy setup in minutes

01

Pick your plan

Choose the SIM package that fits your usage. Not sure? Start with a mid-plan like 24GB. You can upgrade or downgrade anytime.
02

Order online or by phone

Order online or call
03333 055 888. We’ll collect the essentials, like your PAC code & delivery details.
03

Receive your SIM

Your SIM is sent free by first-class post and usually arrives within 1–2 days. It’s triple cut to fit Standard, Micro, or Nano SIM slots.
04

Activate & enjoy

We’ll confirm your switch date if porting a number. Insert the SIM and start using it. Settings are handled for you.

Why choose Xinix for your SIM plan?

Phone 1

Keep your number

It’s easy to switch we’ll help you port your existing mobile number using a PAC code. Usually done within one working day, with minimal downtime.

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All major networks

We offer plans on O2 and Vodafone networks, covering 99% of UK population combined. Choose the network that has the best signal in your area or building.
5G Icon

5G at no extra cost

All our SIMs are 5G-ready. If you have a 5G phone and are in a 5G coverage area, you’ll automatically enjoy ultrafast speeds without paying a premium.

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No hidden charges

The prices listed are what you pay. No connection fees, no separate charges for caller ID or itemized billing. The only extras would be things like international calls beyond any allowances.

Account management

Manage your plan through our online portal. View usage, add bolt-ons, or even change plans as needed. For businesses or families, you can manage multiple SIMs under one account.
Headphones 1

Responsive support

Need help? Unlike big mobile companies, we have a direct line for support. You won’t be bouncing around IVRs, our support agents can handle both account questions and technical issues, quickly.

FAQ

You ask, we answer

Yes. Our plans are data-friendly and support tethering, so you can absolutely use them in tablets, MiFi devices, or 4G/5G routers. An unlimited plan can even serve as home internet for light use households. Just note that the SIM is for normal person-to-person use, not massive constant downloads – but occasional heavy use is fine.
We allow flexibility. If you find you consistently need more data, you can upgrade to a higher plan even during your contract (we’ll just restart a new contract at the new plan, or sometimes we can keep original end date – case-by-case, but we aim to be accommodating). Downgrades typically can be scheduled to happen at the end of your 12-month term or you can switch to a 30-day cycle after 12 months to adjust freely. Our goal is to keep you on the best plan for your needs, so talk to us and we’ll find a solution.
For EU countries, yes – all our plans include EU roaming that lets you use your minutes and texts, plus a fair use amount of data (usually 5GB to 25GB depending on plan) at no extra cost. For destinations outside the EU, our Vodafone Unlimited Max plan has an extensive roaming zone covering many countries. Otherwise, usage abroad (outside EU) is charged per standard roaming rates or you can purchase a roaming bundle before you travel (for example, a 7-day global data pass). Check our website or ask us for rates in specific countries.
All our SIMs are 5G-capable. To use 5G, you need a 5G-compatible smartphone and be in a 5G coverage area of the network (O2 or Vodafone). If you don’t have a 5G phone, no worries, the SIM will work on 4G/3G just fine. And if you upgrade your phone later, the SIM will automatically give you 5G access, no SIM swap required.
Absolutely. Many small businesses and even larger firms use our SIMs for employees. We can provide a batch of SIMs and offer centralized billing. The unlimited plans are great for field staff, and we can mix networks (some staff on O2, some on Vodafone) to ensure everyone has optimal coverage. Business customers also benefit from a dedicated account manager if you have 10 or more connections.
After 12 months, you can either renew/upgrade to a new plan or just continue on a rolling basis. If you do nothing, typically it becomes a monthly rolling at the same rate, which you can cancel anytime with 30 days notice. We’ll reach out near the end of your term with the latest loyalty offers, we often have even better deals for existing customers at renewal.

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