FAQs
What is a Pay Monthly SIM?
A Pay Monthly SIM Only deal gives you a SIM card with a fixed monthly allowance of minutes, texts, and data, without a new phone. It’s perfect if you already have a device and just need a SIM plan to stay connected.
What are the benefits of a Pay Monthly SIM only deal?
With an O2 SIM only deal, enjoy a flexible plan with generous data, texts and minutes, predictable billing, and access to our reliable 4G and 5G network.
Plus, get exclusive perks with O2 Priority.
Can I keep my number when switching to an O2 SIM only deal?
Yes, keeping your current phone number is easy. Just request a PAC code from your existing provider, give it to us, and we’ll transfer your number to your new O2 SIM Only contract.
What types of SIM Only deals are available?
At O2, we have a range of SIM only deals to suit every need. You can even adjust your contract length and tailor your airtime to suit you.
Want more airtime? We've got you covered. Our Plus Plan and Ultimate Plans allow you to level up your Airtime Plan with heaps of extras. You can even benefit from O2 Switch Up and swap your phone for a new one every 90 days. And, get an extended 3-year warranty and roam freely up to 25GB while travelling abroad.
How much mobile data do I need?
When it comes to choosing a SIM only deal, you'll need to find the right amount of mobile data for you. That's why our SIM only contracts are customisable.
Everyone has different data needs depending on what you'll use it for. If you regularly connect to strong, reliable WiFi or hotspots, you might not need as much data. But on the flip side, if you live somewhere with a poor WiFi connection, or you're regularly on the go and you like to stream movies and games - opting for more data could be the best decision for you.
Not sure how much data you'll use? Check out our Understanding Data page.
Can I get an unlimited data SIM only deal?
Yes, you can. Stream, download and scroll without restrictions with one of our unlimited data SIMs.
Do O2 Pay Monthly SIMs include EU roaming?
Yes, they do. You can roam freely in the EU, up to 25GB.
With a Plus Plan or Ultimate Plan, you can use your airtime across even more destinations including the USA, Mexico, Canada, New Zealand, Argentina and Australia. Learn more about EU Roaming.
Can I get a 5G Pay Monthly SIM?
Yes, you can. Shop SIM only deals with 5G right here at O2. Just make sure your phone is 5G compatible so you can enjoy O2's super-fast 5G network speeds.
Is there a minimum contract length for Pay Monthly SIM contracts?
The minimum length for our SIM only contracts is 30 days. You can also choose a 12-month, or 24-month plan, whichever works best for you.
What SIM type do I need?
There are four types of SIMs available: standard, micro, nano and eSIM. An eSIM lets you manage your Airtime Plan without the use of a physical SIM.
If you're unsure what size you need, it's best to check the instructions that came with your device.
What's the O2 Fair Usage Policy?
Our Fair Usage Policy asks that you only use our services or SIM cards for private, personal and legitimate consumer purposes, and not for business purposes.
