As of February 2026, the UK mobile market continues to face annual price hikes, iD Mobile has carved out a significant niche by offering some of the most competitive SIM-only deals. Owned by Currys and running on the Three network, iD Mobile balances high-speed 5G coverage with flexibility that rivals the “big four” networks.
Current Best SIM-Only Deals (February 2026)
iD Mobile is currently running several “Half Price” promotions and “No Annual Price Rise” guarantees on selected plans. Here are the standout offers available this month:
- The Budget Choice: 20GB of 5G data for just £6.00 per month on a 1-month rolling contract. Perfect for those who want total flexibility without a long-term commitment.
- The Best Value Mid-Ranger: 100GB of 5G data for £10.00 per month. This 12-month plan currently features a “3 Months Half Price” offer, bringing the cost down to £5.00 for the initial period.
- The Power User: Unlimited 5G data for £15.00 per month on a 1-month rolling contract. For those looking for a longer commitment, the 24-month unlimited plan is often available for an effective rate of £8.50 for the first 6 months.
Why Choose iD Mobile?
Beyond the raw pricing, iD Mobile includes several “premium” features as standard that are often extra or restricted on other budget MVNOs (Mobile Virtual Network Operators).
- No Annual Price Rises: While many UK networks increase their prices every April by CPI + 3.9%, iD Mobile offers selected “Fixed Price” plans that guarantee your monthly cost won’t budge for the duration of your contract.
- Data Rollover: Any unused data from your monthly allowance is automatically rolled over to the next month, giving you a second chance to use what you’ve paid for.
- Inclusive Roaming: Unlike many major networks that now charge daily fees for European use, iD Mobile still offers “Roam Like at Home” in 50 destinations (up to a 30GB fair usage cap).
- 5G as Standard: All current iD Mobile SIM-only plans include 5G at no extra cost, utilizing Three’s extensive 5G spectrum which covers over 60% of the UK population.
2026 iD Mobile Plan Comparison
| Data Allowance | Monthly Cost | Contract Length | Key Benefit |
|---|---|---|---|
| 20GB | £6.00 | 1 Month | No contract tie-in |
| 60GB | £8.00 | 1 Month | High flexibility |
| 120GB | £10.00 | 12 Months | 3 Months Half Price |
| Unlimited | £15.00 | 1 Month | Best for streaming |
How to Switch Your Number to iD Mobile
Switching your existing mobile number to iD Mobile is a straightforward process thanks to Ofcom’s “Text-to-Switch” rules. Here is how to do it in three easy steps:
- Get your PAC Code: Using your old SIM card, text the word ‘PAC’ to 65075. You will receive a text back within seconds containing your 9-digit Porting Authorisation Code. This code is valid for 30 days.
- Provide the Code to iD Mobile: You can do this during the checkout process when you buy your new SIM. If you already have your iD Mobile SIM, simply log in to the iD Mobile App or visit my.idmobile.co.uk, go to ‘Plan’, and select ‘Switch to iD’.
- Choose Your Switch Date: Enter your PAC and the mobile number you wish to keep. You can then select a switching date that suits you (usually the next working day if submitted before 5:30pm).
Note: On the day of the switch, you may experience a brief period of downtime. Once your old SIM stops working, simply restart your phone with your new iD Mobile SIM inserted.
Expert Tip: If you are a regular Currys shopper, keep an eye out for “Cashback” deals on iD Mobile SIMs. In February 2026, many 12-month plans are offering between £25 and £50 in automatic cashback, which can significantly lower your “effective” monthly cost.
