5G Archives - COOLCURATION

March 26, 2026 — Comments are off for this post.

Best SIM Only Deals UK 2026: Honest Mobile, Smarty and giffgaff

Last updated: 5 September 2026

By Stiv · Design, technology and personal finance

This article contains affiliate or referral links. If you click through and sign up I may earn a commission or referral bonus at no extra cost to you. It does not affect my editorial view.

The best SIM only deals UK in 2026 are not coming from EE, Vodafone, O2, or Three. They come from the challengers running on the exact same infrastructure at a fraction of the monthly cost. Three stand out right now: Honest Mobile, Smarty, and giffgaff. Each one has a distinct edge, and together they cover pretty much every type of mobile user. Every price below was re-checked at source on 5 September 2026, the week giffgaff cut unlimited data on an 18 month contract to £14 a month and Smarty quietly narrowed its unused-data refund.

Read more

Published by Stiv in Buying Guides, Technology lover

Tags: 5G, eSIM, giffgaff, Honest Mobile, mobile, MVNO, SIM only deals, Smarty, UK mobile

Follow us: Instagram

Copyright 2026 CoolCuration | Privacy Policy | Cookie Policy | Affiliate Disclosure | Cool Factor

-----------

We are proud supporters of a safer more private internet via encouraging people to use Brave browser and are actively taking on Spammers as part of ProjectHoneypot. This site is hosted on servers that run on 100% renewable energy in the UK thanks to GreenWebHosting.

This site contains affiliate links, including to Amazon.com and Amazon.co.uk. We may earn a commission if you make a purchase or sign up for a service via these links, at no extra cost to you. All offers and promotions are accurate at the time of publication but are subject to change or withdrawal by the businesses featured. We cannot guarantee their continued availability. Read our full affiliate disclosure.

Reviews and opinions on CoolCuration reflect the personal experience of our writers at the time of publication. They are not professional endorsements and your experience may differ. Scores use our Cool Factor rating system and are given independently of any commercial relationship.

All content on CoolCuration is provided for informational and entertainment purposes only. It does not constitute financial advice, investment recommendations or an endorsement of any product or service. We are not authorised by the Financial Conduct Authority and do not offer personalised financial guidance. You should always do your own research or consult a qualified financial advisor before making any financial decisions.