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How to Keep Your UK Mobile Number When Switching Provider Switching your mobile network in the UK has never been easier, and thankfully you no longer need to put up with poor signal, expensive monthly bills, or slow data speeds just because you don’t want to lose your mobile number. Whether you’re moving from a major provider like EE, O2, Vodafone, or Three, or switching to a smaller MVNO such as giffgaff, VOXI, Lebara, or SMARTY, you can keep your existing number in just a day or two — without complicated paperwork or awkward phone calls. In fact, you can usually transfer your number simply by sending a single text message. This guide walks you through every step, explains what to expect during the transfer, and offers a few insider tips that UK users often miss when switching providers. What You Need Before You Transfer Your Number Before starting the number-switch process, make sure you have the essentials ready. Fortunately,...

Which UK MVNOs Use the Three Network? (2025 Guide) What does it mean to be an “MVNO on Three”? A Mobile Virtual Network Operator (MVNO) that uses Three’s infrastructure doesn’t own its own masts — instead, it “piggybacks” on Three’s network to offer SIM plans. That means you often get access to Three’s 4G and 5G signal, but under different branding and usually with more flexible, often cheaper SIM-only plans. In the UK market, MVNOs on Three are particularly attractive if you want good data coverage without paying Three’s full “own network” branding prices. Major UK MVNOs Operating on Three iD Mobile — One of the best-known; backed by Currys/Carphone Warehouse and officially uses Three’s network. :contentReference[oaicite:0]{index=0} Smarty — Owned by Three itself, this SIM-only MVNO is ultra‑flexible, with rolling contracts and a data‑refund model for unused data. :contentReference[oaicite:1]{index=1} Honest Mobile — A s...

How to Switch UK Mobile Network Without a Contract (2025 Guide) What’s happening Switching mobile networks in the UK is straightforward — especially if you’re not tied into a fixed-term contract. Thanks to Ofcom rules, you can request a code and move networks within minutes. Still, there are little annoyances and subtle steps people miss, so this guide walks you through everything I actually did (and the mistakes I made) to switch cleanly, keep my number and avoid downtime. Who this is for This guide is for anyone on a rolling SIM, PAYG or expired contract who wants to switch networks without penalties. It’s also useful if you favour short-term flexibility (30-day plans) and want to chase better prices or coverage. Step 0 — Quick reality check (before you start) Don’t assume your plan is contract-free. I learned the hard way — my provider app showed “rolling monthly” but a small line in the T&Cs revealed a minimum 3-month notice for one p...