You can change your tariff 30 days after your contract Commencement Date once per billing cycle.

You can change your tariff once per billing cycle.

During your Minimum Term, you can move to a tariff of the same type that was available when you bought your tariff. For example, if you bought a Small Biz SIMO tariff, you must move to another Small Biz SIMO tariff.

If you bought a Small Biz handset tariff, you must move to another Small Biz handset tariff in the same tier (and it must be a tariff that was available when you bought your device, excluding any promotional tariffs).

The tariffs you can move to and the price you will pay for the tariff will be outlined in the Business Inclusive minute and text tariff terms here

You won’t need to pay a fee for moving tariffs. The costs for the different tariffs can be found in the Business Inclusive minute and text tariff terms.

Your tariff change can be done at the end of the billing cycle. If you’ve run out of data and need more, you can buy a snacking data Bolt On.

Get in touch if you’d like to change your tariff:

• Talk to us via Live Chat, Monday – Friday from 8am – 8pm and Saturday and Sunday from 9am – 6pm 
• Give us a call on one of the following numbers, Monday – Friday from 8am – 8pm and Saturday, Sunday and Bank Holidays from 9am – 7pm.

Calls from abroad are free from an O2 Business mobile. Other providers charges may vary.

The advisor will process the change immediately, and your tariff will change within a few hours. However, it will take up to 48 hours for your new tariff to show in My O2 Business.

The advisor will let you know when the tariff change will take place. After 48 hours, your tariff change will show in My O2 Business. Log in to My O2 Business to check if the change has been reflected.

Yes, you can increase and then decrease your data allowance. On some of our tariffs you can move to a tariff with a lower data allowance. And on other tariffs, such as Small Biz SIMO, Small Biz Data Only, and MBB Sim Only tariffs, you can’t go below the data or price paid when you started the contract. See our terms and conditions here to find out more about your tariff.

Not in all cases. Some tariffs have an allowance of UK to EU minutes and texts included, plus Data Rollover. If you’ve moved to a tariff that doesn’t have the same benefits included, you’ll no longer be able to use those benefits.

You won’t be able to change your contract length mid-contract. You will need to choose your contract length up front, and you cannot change this for the duration of the contract, unless you change your contract.

For more information on upgrading early, please contact us.

It’s a benefit that’s included with some of our tariffs. Any data that you don’t use will roll over to your next billing month. Any rolled-over data is used before your regular monthly allowance, giving you more time to use the data that you’ve paid for.

Your data will roll over for one month only. If you don’t use your rolled-over data by end of the billing month it’s rolled into, it’ll expire.

Data Rollover is available on selected tariffs from 25 March 2021 with a core data allowance from 6GB up. This excludes the 3GB double data, 2GB triple data and Unlimited data tariffs.

The eligible tariffs are Small Biz Tariffs which includes Small Biz, Small Biz Sim Only, Small Biz Data Only and MBB Sim Only tariffs

You can get Data Rollover by buying or upgrading onto an eligible tariff. If you’re buying over the phone, the advisor will tell you if you have Data Rollover included in your tariff. If you’re buying online, it will be listed on all eligible tariffs.

Take a look at our shop to see our sims, phones and tablets that come with Data Rollover.

Tariffs or data bundles that have Data Rollover included will automatically roll over any unused data at the end of the billing period, ready for you to use the next billing period. You don’t need to do anything to roll the data over into the next billing period.

Your data will automatically be rolled over to your next billing period, and it’ll be used before your data allowance for the new billing period starts. You can use it for any of the activities you’d usually use data for like checking emails, online browsing, business apps or watching videos.

Any eligible tariff that is also a promotional tariff with a core data allowance from 6GB up (exclude Unlimited) will include Data Rollover. For example, if after 25 March 2021, you purchased a 6GB data Small Biz SIMO tariff that includes double data (bringing the data total to 12GB), you will have purchased an eligible promotional tariff that includes Data Rollover.

However, the 2GB triple data tariff (which has a total of 6GB data) and the 3GB double data tariff (which has a total of 6GB data) do not include Data Rollover.

If your tariff includes Data Rollover it will be clearly listed when you choose it. You can also check by signing in to My O2 Business or by viewing your bill.

If you move to a tariff with Data Rollover, you will not roll over any data from your old tariff to your new one. Your data allowance will reset to the amount of the tariff you change to. However, any future unused data will rollover into the following billing period.

If you change your tariff to a tariff that is not eligible for Data Rollover, you will no longer roll over data.

If you upgrade to a tariff with Data Rollover, you will not roll over any unused data from before the upgrade. However, any future unused data will roll over into the following billing period.

If you upgrade your tariff to a tariff that is not eligible for Data Rollover, you will not roll over any data.

If you cancel your contract, you will benefit from the Data Rollover until you are disconnected. Once your contract has ended and you are disconnected, you will not be able to access any data, even if you have some left over.

If you only miss one payment, your tariff will not be impacted and you will continue to still have Data Rollover. However, if you continue to miss payments, your account may be barred. You won’t be able to use rolled over data and you may not be able to accrue data.

Contact us to discuss your options if you have missed a payment.

You can check by signing in to My O2 Business or by checking on your bill.

To check your remaining data, sign into My O2 Business and select ‘Allowance and Usage’. If you’re on a tariff with Data Rollover, the remaining data will include your regular monthly allowance plus any rolled over data from the previous billing month.

Yes, notifications sent when you have used 80% or 100% of your data allowance include both the data rolled over and your monthly allowance.

Our snacking data Bolt Ons do not include Data Rollover, so these will expire at the end of the billing cycle they are purchased in. Find out more about the data bolt ons available.

Your Spend Cap will work in the same way, whether you have Data Rollover or not. If you have Data Rollover, you’ll use any rolled over data first, then your regular monthly data allowance. If you use both of these up and you don’t have a snacking data Bolt On, any chargeable usage outside your monthly allowance will count towards your Spend Cap.

Once you’ve reached your Spend Cap limit, further chargeable out-of-bundle usage won’t be possible. You’ll always be able to make calls to O2 customer service and calls to emergency services from your O2 mobile.

Visit our help pages to find out more about how Spend Caps work.