TL;DR: After 15 years with Three, I switched to iD Mobile and I’m saving a small fortune each month.
Same 5G coverage (because iD runs on Three), cheaper plans, no annual price hikes, free EU roaming, and features like data rollover and bill capping that just make sense.
If you’re tired of overpaying, iD Mobile is a no-brainer.
👉 Grab this 12-month iD SIM-only deal with cashback
Since 2010, I’ve been paying Three for Unlimited Data. That’s 20 to 25 quid a month for 14 years. Or, £4200 in total if I really want to depress myself.
To make matters worse, for the last several years, I’ve barely used 10GB of mobile data month. Remote work means I literally live on my WiFi network, whereas when I first got the plan I was commuting and in an office all day.
I’d been with Three since the iPhone 3GS. That’s how far back we go. I never really had any complaints but like most people, I kind of like getting stuff for less money.
And with the rise of MVNOs, this is now easier than ever. You get the same coverage, the same speeds. But you pay less. And iD Mobile runs on Three’s network. What’s not to like?
So I did what I should’ve done years ago: I switched to iD Mobile.
Is iD Mobile Good?
Simple. It runs on Three’s network. Same 4G, same 5G, same coverage in my area. No speed throttling. No compromise. But the price? It’s a lot cheaper. Over the course of a few years, you’re looking at hundreds in savings.
I went from £25 a month with Three to £8 with iD Mobile for 60GB of data, a plan I don’t even come close to maxing out.
That’s a £204 annual saving for literally the same experience.
The Switch Was Easy
Porting my number over took less than 15 minutes.
Text your PAC to 65075, plug the code into iD Mobile during checkout, and you’re good to go.
I did it over lunch. No drama.
What I Gained (Besides Money)
- Data rollover: Whatever I don’t use rolls into the next month
- Bill capping: Set a hard cap so I can’t overspend accidentally
- Free EU roaming: Use my UK allowance in 50+ European destinations
- 1-month or 12-month contracts: Proper flexibility without price hikes
- Loyalty perks: iD Perks offers discount codes for stuff I actually buy
Three doesn’t offer half of this, especially not on SIM-only.
What I Lost
Not much. iD’s customer service is online-only, so if you like calling someone up when you’ve got a question, this might be a downside. Personally, I haven’t needed any help since signing up, but it’s worth flagging.
Also, while eSIM is now supported on iD Mobile, Wi-Fi calling isn’t available on every handset just yet. Check before you commit if that’s a must-have for you.
Would I Go Back?
No chance. Unless Three start offering 60GB of data for £8 a month, with bill caps and data rollover, I’m sticking with iD.
If you’re happy with your coverage on Three, there’s zero reason not to switch. You get everything you like—minus the price hikes, minus the fluff, and with smarter extras.
👉 Get the deal I’m on here – 60GB of data, unlimited minutes/texts, and zero annual price rises.
