iD Mobile
40GB
£8 /month
- 1-month plan
- Provider page states no annual price rises
- Unlimited minutes/texts shown on provider page
SIM-only deals
Provider-published SIM examples.
These examples come from current provider pages checked on 26 September 2026. Follow the live-source button to confirm the current plan before relying on it.
Rolling and fixed-term examples
Current SIM-only examples
No invented “best SIM” ranking. These cards show factual examples and link straight to the provider page.
iD Mobile
100GB
£5 /month for 6 months
- 24-month plan
- Provider page shows £10/month from March 2027 bill
- Promotional structure can change
iD Mobile
Unlimited
£18 /month
- 1-month plan
- Provider page states no annual price rises
- Confirm fair-use/roaming terms before use abroad
SMARTY
20GB
£9 /month
- Rolling monthly plan
- Unlimited UK calls & texts shown
- Provider says no annual price rises on rolling plans
SMARTY
100GB
£12 /month
- Rolling monthly plan
- Unlimited UK calls & texts shown
- Check live page for promotions
SMARTY
Unlimited
£20 /month
- Rolling monthly plan
- Unlimited UK calls & texts shown
- Roaming/fair-use rules still apply
Why the source button matters: a plan can be repriced, promoted, withdrawn or subject to eligibility/fair-use conditions after our check. The provider page is the final source for current availability and terms.
Contract length
A 1-month rolling plan and a 24-month plan are different commitments even when the monthly price looks similar.
Roaming & fair use
“Included roaming” can have destination and data limits. Read the current provider terms.
Coverage
Availability of 4G/5G varies by location, device and network conditions. Use the provider's coverage checker.