Are you in the market for a better data, minutes and texts plan for your mobile? Perhaps you’ve found you’re hitting your data limit a little too often for comfort and now’s the time to do something about it. Or, if you’re out of contract and have realised you’re paying too much for what you have – don’t worry, the deals below can help you out.
We’ve compiled the best SIM plans right here, no matter what your budget is or your requirements, all of which take into consideration costs and, of course, how much data you can get for your buck.
SIM-only deals are just as they sound: the SIM without the expensive phone added to the whole contract. It’s the minutes, texts, data allowance and nothing more.
These are great if you’re out of contract and want to save some money, or if you’ve bought a phone SIM-free, such as any in our best smartphone buying guide. It’s also ideal, as mentioned, if you now need more data, as there are great deals to be had.
We’ve broken down the best of the best. They’re sorted by data and price, making it easy to find what you’re looking for and allowing you to compare to what you already have.
Some of the best offers are from companies running off the back of EE, O2, Vodafone and Three. That’s because they can undercut the prices of the main networks and by some margin, too.
Also, if you are reading this while researching what’s available as an initial step to buying a new phone, then we can also help you out. Feel free to dive into our best foldable phones buying guide, best mid-range mobile, best budget phones, and best small phone round-ups.
Unlimited Data Deals
100GB+ Data Deals
50-100GB Data Deals
10-50GB Data Deals
Below 10GB Data Deals
How to choose the best SIM
There are various factors to think about when considering a SIM-only plan:
Data: Using the phone for streaming, gaming, apps and surfing the web away from Wi-Fi can put a strain on your data allowance. It might be worth reviewing your current usage and what you use or might need in the future when considering an upgrade. It’s always worth giving yourself a data cap that provides some wiggle room in relation to your average usage, just to ensure that you don’t have to incur additional costs if you happen to have a particularly data-heavy month.
Contracts: SIM deals usually have shorter service terms than all-in-one phone plans, typically 12-month or 30-day rolling plans, with the latter offering greater flexibility. While 18-month and even 24-month options are available, we recommend choosing a shorter term so you’re not tied in for long if you’re ever dissatisfied with your service.
Networks: Most mobile phone networks nowadays offer a good coverage area, and it’s worth checking what works best in the usual places you’d be with your mobile. With that said, there are networks that run off the back of the usual EE, O2, Vodafone and Three that offer good service at a lower price, such as Smarty and Voxi. Some networks also come with additional freebies and reward services, including O2 Priority and Three Plus, so it’s worth doing a bit of comparison to see what you can get for your money.
Want to see more reviews and news? Add Trusted Reviews as a preferred
The post Best SIM-only Deals September 2026: Mobile phone plans for all needs and budgets appeared first on Trusted Reviews.
