Best SIM Only Deals

Roaming (EE) - Customers on eligible plans will be able to use their minutes, texts and data at no extra cost when roaming in the EU/EEA. Speed and service will vary depending on the service available in the country you visit. You must be normally resident in the UK. Data fair usage policy may apply, see EE’s PAYM plan terms and PAYG plan terms, ee.co.uk/terms for full details.

Roaming (Three) - Three Advanced customers can use their allowance in 49 EU destinations, as well as 22 extra countries including the USA, Australia, New Zealand and more. A Fair Usage Policy for data abroad applies. If your domestic data allowance is greater than 19GB, you will be subject to a fair usage policy of 19GB whilst you are roaming in the network's Europe Zone: this means you can use a maximum of 19GB from your data allowance while roaming.

Roaming (Vodafone) - Vodafone Global Roaming is included in all new and existing pay monthly Essentials and Red Extra plans, allowing you to use your home plan in 48 Roam-free destinations, including destinations such as Spain, France and Croatia.

Roaming (Vodafone Red Entertainment) - Vodafone Global Roaming Plus is included in new and existing pay monthly Red Entertainment plans, allowing you to use your home plan in 48 Roam-free destinations, as well as an additional 29 popular Roam-further destinations including Australia, New Zealand and the USA.

Roaming (O2) - Call, text and data allowances can be used in our Europe Zone, subject to O2’s fair use policy. International rates apply when you’ve used up your allowance or make calls, texts and data outside the Europe Zone. For the list of Europe Zone destinations and out of bundle charges see o2.co.uk/help/pay-monthly/roaming-in-europe.

International Calling (Vodafone Red Entertainment) - 500 minutes (a month) of International Calling is included in new and existing pay monthly Red Entertainment plans, allowing you to call 31 EU destinations from your home in the UK.

4G in more places/Fastest (EE) - Based on results from the RootMetrics® UK RootScore® Report: H2 (Jul – Dec 2017). Tested at locations across the UK with the best commercially available smartphones on 4 national mobile networks across all available network types, conducting over 25K randomly sampled test cycles. EE tests carried out using 4GEE Max tariff with uncapped speeds. Your experiences may vary. The RootMetrics award is not an endorsement of EE. Visit rootmetrics.co.uk for more details.

4G (O2) - 4G-ready phone (or device) required. 4G is subject to availability and a 4G SIM and software update may be required. Additional charges may apply for 4G service. See o2.co.uk/coveragechecker to check coverage in your area.

BT Sport – 24 months’ Offer (EE) - The app is an inclusive benefit of pay monthly Max Plans. See ee.co.uk/terms for full details. When you download and use the BT Sport app, you will use data that may decrement from your price plan’s inclusive allowance.

Add-Ons (EE) - Subject to credit check. Cost added next bill and then every bill each month until you ask EE to remove it. Allowances last until next bill or until used it, whichever comes first. Allowances don’t roll over. Once you have used up the allowance, standard rates apply as set out in EE’s Non-Standard Price Guide.

Go Further Add-On (EE) - This Add-on allows you to use your data allowance in the USA, Canada, Mexico, Australia and New Zealand in addition to the UK & EU/EEA. 6-month minimum commitment required. See ee.co.uk/terms for details. Cost added to next bill and then every bill each month for the 6 months minimum term (even if you terminate before the end of the 6-month minimum term). After 6 months it will continue each month until you ask EE to remove it.

Go Faster Add-On (EE) - 4G speed is usually capped at 60MB on Essential and SIM plans; this Add-On allows you to access uncapped 4G speeds. UK use only. 4G speeds depend on location, number of users and plan. Check your coverage at ee.co.uk/coverage before purchasing the Go Faster Add-on.

International Calls & International Calls Extra Add-On (EE) - Included in your Add-On is calls from the UK to standard landline or mobile numbers in selected countries. See ee.co.uk/terms for countries. Redial before 120 minutes to avoid call charges.

Apple Music Membership (EE) - The individual Apple Music Membership Add-On is free for 6 months for customers on EE pay monthly or SIM only phone plans and adding the Add-On to their account for the first time. After 6 months, membership automatically renews and you’ll be charged £9.99 a month unless you cancel. Unless you have an Apple Music Streaming Add-On, data usage will decrement from your plan’s data allowance. Apple Music terms apply. For more details go to ee.co.uk/applemusicterms.

BT Sport Add-On (EE) - The app is made available to pay monthly customers on Essential handset and SIM only phone plans as a 30-day rolling Add-On. See www.ee.co.uk/terms for full details. When you download and use the BT Sport app, you will use data that may decrement from your price plan’s inclusive allowance.

Passes (Vodafone) - Available on Red Extra and Red Entertainment plans, Vodafone Passes let you use specific apps and websites, without using your inclusive data allowance (both in the UK and in Vodafone's 50 Roam-free destinations). The cost of a Pass will be added to your monthly bill and will renew automatically on your billing date each month. For what's included with your Pass, please visit Vodafone's Passes page. You can add or remove Vodafone passes anytime by logging in your My Vodafone account, or in the My Vodafone App.

Entertainment (Vodafone) - Red Entertainment plans come with a choice of free entertainment for 24 months (12 months on SIM only), including Amazon Prime Video, Spotify Premium, Sky Sports Mobile TV and NOW TV Entertainment Pass. To activate it, follow the instructions in the text Vodafone sends, or text Entertainment to 97613 to receive the message.

Secure Net (Vodafone) - Red Extra and Entertainment plans come with a free three-month Vodafone Secure Net trial, to help protect your device from online treats and risks. After your free three-month trial, Vodafone Secure Net is charged at £1 a month, and is added to your monthly bill and will renew automatically on your billing date each month. You can cancel any time by contacting Vodafone.

Priority (O2) - Only on O2. You must be an O2 customer, 16 or over with internet access. Data charges may apply. Offers subject to eligibility criteria and availability. When they’re gone, they’re gone. Terms apply - see o2.co.uk/terms.

O2 WiFi (O2) - O2 WiFi is subject to availability. Fair use policy and terms apply. No registration required for O2 customers at 4,500 of over 15,000 hotspots. Registration may be required in remaining hotspots and for all non-O2 customers. See o2.co.uk/wifi for more info. Terms apply - see o2.co.uk/terms.

Extra Data (O2) - Extra data allowances only apply during your 24-month minimum term. 24-month minimum term Pay Monthly contract means if you wish to cancel or leave within the term, you will need to pay the standard monthly tariff for the remaining months. Unused mins, text and data allowances must be used within the month and cannot be carried over. Data can be used in the UK and when roaming in our Europe Zone only. UK calls/texts to standard UK landlines and mobiles and when roaming in our Europe Zone. Excludes premium-rate and service numbers. Fair Usage policy applies. Special and out of bundle numbers chargeable. Connection subject to status and payment by Direct Debit. Subject to availability. Terms apply - see o2.co.uk/terms.

Data Speeds - Advertised 4G speeds are available in selected areas. Exact speed depends on location and number of users. Check coverage using the link in the shopping basket before buying.

Allowances - Use your allowance to call/text UK mobiles and landlines starting 01, 02 and 03 when in the UK or EU/EEA; to call/text EU/EEA mobiles & landlines when roaming in EU/EEA (outside UK); Jersey, Guernsey & Isle of Man treated as EU/EEA. Out of allowance calls to these numbers cost 55p/min. Data allowance can be used in UK & EU/EEA. Data fair use policy may apply in EU/EEA. Deposit needed for roaming in limited circumstances. Calls to 084, 087, 09 & 118 numbers are not included; you'll be charged an Access Charge of 55p/min plus the applicable service charge. If you call a 070 you'll be charged up to 75p/min (EE, Three) or 55p/min (Vodafone). Personal use only.

Products - All products bought on our website are provided by ourselves, not the network, and are subject to our full T&Cs.

Tethering (Three) - There is a tethering allowance cap of 30GB on Three Advanced plans.