RPI: Each year your Airtime Plan will be adjusted by the Retail Price Index (RPI) rate of inflation. Find out more at o2.co.uk/prices.

Direct purchases only. Pay the cash price for your device or spread the cost over 3 to 36 months (excludes dongles). The cost of your Device will be the same however long you choose. A minimum upfront cost may apply. You need a monthly rolling Airtime Plan for the length of the Device Plan. Pay off your Device Plan at any time without charge. You can then keep on your Airtime Plan, upgrade or leave. If your Airtime Plan ends for any reason (including for switching to another operator) you will need to pay your Device Plan in full.

UK calls/texts to standard UK landlines and mobiles and when roaming in our Europe Zone. Fair Usage policy applies. Special and out of bundle numbers chargeable. 4G phone required to access 4G. 4G available in selected areas.

Change your airtime tariff after 30 days and then once every billing month during your minimum contract period, choosing from a selected family of tariffs. Some tariff extras are only available on the starting tariff, are not transferable, and may be lost if you change to an ineligible tariff. Devices are subject to availability.

0% APR. Finance subject to status and credit checks, 18+, Direct Debit. Credit provided by Telefónica UK Ltd, SL1 4DX. Terms apply, see o2.co.uk/terms.

Each year your Airtime Plan will be adjusted on your April bill by the RPI rate of inflation announced in the preceding Feb. See o2.co.uk/prices.

Unlimited Data available on O2 Custom Plans on selected handsets and selected SIM Only tariffs. Fair use policy applies, personal and non-commercial usage only. If you regularly use 650GB of data per month or tether 12 or more devices we may consider this to be non permitted use and have the right to move you to a more suitable plan. EU roaming capped at 25GB per month, chargeable at £3.50 per GB afterwards. For full terms see www.o2.co.uk/terms.

Harman Speaker Promotion – Promoter: Samsung Electronics (UK) Limited. UK, Isle of Man, Channel Islands or Republic of Ireland residents (18+) only or registered companies in the same. Purchase a new Samsung Galaxy A51 or A51 5G from a participating retailer between 07/10/2020 – 17/11/2020 and claim a HK Citation One speaker by redemption. No cash alternative. Individual Participants must complete the online claim form in the Benefits section of the Samsung Members app pre-installed and company Participants must visit https://www.samsung.com/uk/offer/free-harman-kardon-bluetooth-speaker-a51-deal to upload proof of purchase and provide all other required information (Claim). All Participants must Claim between 0-30 days of purchase. Maximum 1 Claim per Promotion Product purchased (maximum 2 Claims per household) and a maximum of 250 Claims per company participant. See https://www.samsung.com/uk/offer/free-harman-kardon-bluetooth-speaker-a51-deal for full Promotion terms. £179 based on price of Harman Kardon Citation One Smart Speaker on https://www.harmankardon.co.uk/wireless-speakers/HKCITAONEMKIIGRYEU.html and correct as of 16/09/2020. Subject to availability, while stocks last. No cash or alternatives. Damaged or lost redemption vouchers will not be replaced. Offer may be withdrawn or amended at any time. Change of mind policy applies to Qualifying Purchase and Gift as a bundle. If you return the Qualifying Purchase without the Gift you will be charged the standard retail price for the Gift. Internet access is required.