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O2 30-day SIM only deals

O2 30-day SIM only deals are a great way to try out O2 before committing to a longer contract. If you need something different, O2 are have a range of other SIM only deals available:

How does an O2 30-day rolling SIM only deal work?

A 30-day O2 SIM rolls on month to month with no fixed term. You pay for one month at a time and can change plan or leave with around 30 days' notice.

It's the most flexible way to use O2, ideal for trying the network before committing or for short-term needs.

Do O2 30-day SIMs still include Priority and roaming perks?

Yes. Even on a rolling 30-day plan you can access O2 Priority offers and inclusive roaming in selected destinations, just as you would on a longer contract.

That makes the 30-day deal a low-risk way to enjoy O2's extras while keeping the freedom to switch at short notice.

Our top pick
logo
Unlimited speed
5G+

Standard 30 day SIMO - 1 month

Data
50 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£20per month
Boosted Broadband Speeds for Virgin Media Customers
Get deal
logo
Unlimited speed
5G+

Standard 30 day SIMO - 1 month

Data
150 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£30per month
Get deal

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logo
Unlimited speed
5G+

Standard 30 day SIMO - 1 month

Data
30 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£15per month
Get deal
logo
Unlimited speed
5G+

Standard 30 day SIMO - 1 month

Data
10 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£10per month
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 100GB - 1 month

Data
100 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£31per month
Get deal
logo
Unlimited speed
5G+

SIM Only Mini Unlimited - 1 month

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£38per month
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 3GB - 1 month

Data
3 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£24per month
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 20GB - 1 month

Data
20 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£27per month
Get deal

A 30-day rolling plan with O2 lets you leave with a month's notice, without a long-term commitment. This flexibility typically costs a little more per month than O2's 12-month or 24-month contracts, but suits anyone who values being able to change their mind.

1. Who benefits from a rolling O2 plan

  • Anyone testing O2's network in their area before committing longer term.
  • Switchers with uncertain plans, who don't want the risk of a fixed contract.

2. Testing O2's coverage first

A rolling plan lets you check how O2's network performs in your specific area before signing up for a longer, better-value contract.

3. The price trade-off

Because O2 isn't guaranteed your custom for a fixed period, rolling plans typically cost a little more per month for the same data allowance.

4. A low-risk way to try O2 before committing

If you've switched networks before and been caught out by poor signal at home or work, a rolling plan lets you properly test O2 in daily use — including at the specific times and places where you need it most — before moving to a better-value 12-month or 24-month contract.

5. Frequently asked questions

How much notice do I need to leave a rolling O2 plan?
Typically 30 days, though check the exact terms directly with O2.

Is a rolling plan always pricier than a fixed-term contract?
Usually the monthly price is a little higher for the same allowance, in exchange for not committing to a fixed period.

Can I switch to a longer O2 contract later?
In many cases yes, once you're confident in O2's network performance for your area.

Does O2's rolling plan support 5G?
Check our O2 5G SIM-only deals guide, and confirm your phone supports 5G first.

6. Conclusion

O2's 30-day rolling plan offers genuine flexibility, ideal for testing coverage or avoiding commitment. If you're confident you'll stay longer, comparing against its 12-month or 24-month contracts will likely save money.