SIM only comparison
Keep your phone, upgrade your value.
Why pay for a handset you already own? Wisemium analyzes the market to find SIM-only plans that offer more data for less spend. We simplify the fine print so you can switch with confidence.
Compare top-tier networks instantly.
- Real-time deals from leading UK providers.
- No-tie contracts for ultimate freedom.
Compare Deals From UK's Biggest Networks
Compare SIM-Only Deals
Provider
Tariff Type
Fuel Type
Monthly Cost
200 GB
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
18
Contact
£20
Monthly Price
10 GB
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£7
Monthly Price
40
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£8
Monthly Price
50
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£9
Monthly Price
75
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£10
Monthly Price
150
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£14
Monthly Price
250
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£15
Monthly Price
30 GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£9
Monthly Price
5GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£4.50
Monthly Price
5GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
No Contract
Contact
£5
Monthly Price
30 GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
No Contract
Contact
£10
Monthly Price
50 GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
No Contract
Contact
£5
Monthly Price
Unlimited
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Check terms
30 Days
Contact
£22
Monthly Price
100 GB
Data
Mozillion
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
24 months
Contact
£12
Monthly Price
30 GB
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Check terms
30 Days
Contact
£14
Monthly Price
30 GB
Data
Mozillion
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
24 months
Contact
£9
Monthly Price
30GB X 3 months
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£12
Monthly Price
Family Unlimited Deal
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£12.5 (50% OFF)
Monthly Price
Family Unlimited Deal
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£25 ( 1st Sim)
Monthly Price
200 GB
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£20
Monthly Price
100 GB
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£15
Monthly Price
50 GB
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
30 Days
Contact
£10
Monthly Price
1 GB
Data
Runs on EE
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
30 Days
Contact
£5
Monthly Price
Unlimited
Data
Chattr
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
No Contract
Contact
£10
Monthly Price
80 GB
Data
Mozillion
Network
£0
Setup Fee
Yes
5G
No mid-contract price rise
24 months
Contact
£11
Monthly Price
25 GB
Data
Vodafone
Network
£0
Setup Fee
Yes
5G
Usually flexible
30 Days
Contact
£From £13
Monthly Price
20 GB
Data
02
Network
£0
Setup Fee
Yes
5G
Usually no mid contract rise
12 months
Contact
£From £9
Monthly Price
Prices and offers may change. Please check the provider website for the latest terms.
Understanding the SIM-Only Advantage
Understanding Your SIM Card
Understanding eSIM Technology
- The Advantage: eSIMs generally cost the same as traditional SIMs and are supported by major UK networks including EE, Vodafone, O2, Three, and Lyca Mobile.
- The Trade-off: Transferring an eSIM to a new device is slightly more involved than swapping a physical card, as it requires a fresh digital activation process on the new hardware.
eSIM technology is featured in most modern handsets released over the last decade. To use this service, you will need a compatible device, such as:
- You’ll need a newer iPhone or Android phone, such as:
- Apple: iPhone XR, XS, and all subsequent models.
- Google: Pixel 2 and all newer generations.
- Samsung: Galaxy S20 series and all later flagships.
- Sony: Xperia 1 IV, 10 IV, 1 MK5, and 10 MK5.
- Others: Recent premium models from Motorola, Huawei, Oppo, and Rakuten.
How do I get a cheap mobile phone deal?
Available SIM-Only Options in the UK
Long-Term Contracts (12 & 24 Months)
These plans offer a fixed monthly allowance for data, calls, and texts. You are billed monthly, removing the need for manual credit top-ups.
Flexible Rolling Monthly Plans
These 30-day contracts renew every month and offer the freedom to switch or cancel your plan with just one month’s notice.
No-Contract Pay As You Go (PAYG)
Ideal for light users, this option requires you to add credit to your SIM and pay only for the exact amount of data, minutes, and messages you consume.
Data-Only Solutions
These plans focus entirely on internet connectivity. While they do not traditionally include a standard phone number for cellular calls, they are perfect for tablets or users who rely solely on data-based communication apps.