Last updated: Sunday 1 November 2026
By: Switch Editorial Team, Switch Squid Ltd
On 27 October 2026, the best unlimited minutes and texts SIMs with mid-size data were Smarty 40GB at £7 a month with our deal button, or 32GB for £8 on Smarty’s own site, both on 1-month plans (Three); iD Mobile’s 15GB at £6 a month on a 1-month plan (Three), or its 40GB at £8 a month on a 12-month plan as listed on 28 October 2026; Mozillion’s 30GB at £7.90 a month on a 1-month plan (EE) as listed on 28 October 2026; and giffgaff’s 40GB at £8 a month on an 18-month plan (O2), with 25GB at £10 a month on the same term, as listed on 1 November 2026; giffgaff says the 40GB for £8 plan is for sign-ups before 4 December 2026. All include unlimited UK calls and texts. This guide ranks mid-data SIMs that already include unlimited UK minutes and texts, not another Unlimited-data beauty contest. We may earn a commission if you buy using the deal buttons on this page.
Sources: Smarty and iD Mobile plan pages, and giffgaff’s offer announcement of 23 October 2026, checked on 27 October 2026; giffgaff’s plan pages were checked on 1 November 2026.
Smarty 40GB SIM — £7 a month with our deal button, 1-month rolling
- 40GB + unlimited UK calls/texts on Three, as listed on 1 November 2026
- Month-to-month, so you can change plan or leave whenever you like
- Confirm 40GB and £7 on SMARTY’s page before you pay
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Offer facts (checked 27 and 28 October 2026)
Plan | Term | Promo price | Data | Mins / texts | Network |
|---|---|---|---|---|---|
Smarty 32GB (16GB plan with extra data) | 1-month | £8/mo | 32GB | Unlimited UK | Three |
iD Mobile 15GB | 1-month | £6/mo | 15GB | Unlimited UK | Three |
giffgaff 40GB | 18-month contract | £8/mo | 40GB | Unlimited UK | O2 — giffgaff says sign up before 4 December 2026; early-exit charges if you leave early |
iD Mobile 40GB | 12-month contract | £8/mo | 40GB | Unlimited UK | Three |
Mozillion 30GB | 1-month | £7.90/mo | 30GB | Unlimited UK | EE |
Unlimited UK minutes and texts are table stakes on these plans. The real decision is data size, host network coverage and whether you want a rolling exit door or an 18-month rate lock.
What “unlimited mins & texts mid-data” should mean in October
Most people typing that phrase already assume calls and texts are unlimited. They need a calm 20–40GB bucket for maps, social video and light hotspotting — not a blank data cheque. Paying £20 or more for Unlimited data “just in case” is fine when Settings already shows 60GB+ months; it is expensive habit when you average 18GB on café Wi-Fi.
Illustrative 12-month cost (prices as listed on 27 and 28 October 2026, not quotes):
Smarty 32GB £8 × 12 = £96 (or Smarty 40GB at £7 with our deal button: £84)
iD Mobile 15GB £6 × 12 = £72 (1-month plan, Three network)
giffgaff 40GB £8 × 12 = £96 during the 18-month term (£144 over 18 months)
iD Mobile 40GB £8 × 12 = £96 (12-month plan, Three network)
Mozillion 30GB £7.90 × 12 = £94.80 (1-month plan, EE network)
iD Mobile 40GB for £8 a month, 12-month plan
- 40GB of 5G data with unlimited UK calls and texts for £8 a month on a 12-month plan, £96 over the year, as listed on 1 November 2026
- Runs on Three’s network; the same £96 a year as giffgaff’s 40GB, on a 12-month term instead of 18 months
- Main limitation: you commit for 12 months. Confirm 40GB and £8 on iD Mobile’s page before you pay
When Smarty 40GB £7 wins
Choose Smarty when Three coverage is solid, you want an easy exit, and 40GB matches real usage. At £7 a month with our deal button it undercuts many 18-month mid-data contracts on monthly price while keeping the cancellation door open for students, renters and anyone testing a new city signal.
When giffgaff mid-data plans fit better
iD Mobile 15GB £6: light users with good Three signal who want a 1-month plan.
giffgaff 40GB £8 / 18 months: stable O2 coverage and you will keep the line for the term.
iD Mobile 40GB £8 / 12 months: Three coverage and happy to commit for a year.
Mozillion 30GB £7.90: EE coverage and a 1-month plan.
Skip Unlimited data for this brief unless Settings already proves you need it — then read our rolling-vs-18-month and Unlimited brand guides instead.
Fit summary
Good for Smarty 40GB £7 with our deal button: Three coverage, mid-data habits, want month-to-month flexibility with unlimited UK calls and texts.
Good for Mozillion 30GB £7.90: EE coverage, want a 1-month plan.
Good for iD Mobile 15GB £6: lighter data, Three coverage, want the lowest monthly cost on a 1-month plan.
Good for giffgaff 40GB £8: O2 homes willing to commit 18 months.
Not for: heavy hotspotters who routinely pass 60GB — budget for Unlimited data instead.
Important conditions
Prices can change, so confirm the retailer page on the day you order.
giffgaff says its 40GB for £8 plan needs a sign-up before 4 December 2026 to get the listed data.
18-month plans carry early-termination charges.
Fair-use, roaming caps and tethering rules sit in each retailer’s terms.
eSIM vs physical SIM: order early if you are travelling or changing handset the same week.
Keep a PAC text (65075) ready if you are porting your number.
Switching steps
1) Check monthly data use in Settings for the last three months.
2) Confirm your handset is unlocked.
3) Run Three (Smarty, iD Mobile), O2 (giffgaff) and EE (Mozillion) coverage for home and commute.
4) If 40GB and Three look right, order Smarty 40GB at £7 with our deal button.
5) Activate, confirm data with Wi-Fi off, then port your number if needed.
6) Diary any price change dates so a step-up does not surprise you.
Final decision card
Three coverage + mid-data + want flexibility → Smarty 40GB £7 with our deal button.
EE coverage + want a 1-month plan → Mozillion 30GB £7.90.
Light data + lowest price → iD Mobile 15GB £6 (1-month plan).
O2 coverage + stable 40GB need + can commit → giffgaff 40GB £8 / 18 months.
Heavy data → leave the mid-data aisle.
Mozillion 30GB for £7.90 a month, 1-month plan on EE
- 30GB with unlimited UK calls and texts for £7.90 a month on a 1-month plan, £94.80 over 12 months, as listed on 1 November 2026
- Runs on EE’s network, so it suits homes where EE’s signal beats Three’s and O2’s
- Main limitation: 10GB less than the 40GB plans above for a similar price. Confirm 30GB and £7.90 on Mozillion’s page before you pay
Why unlimited mins and texts still matter in 2026
Data-heavy marketing sometimes buries the voice and SMS bundle. If you still call GP surgeries, schools or tradespeople, a plan that quietly throttles minutes is a false economy. The mid-data SIMs in this guide keep unlimited UK calls and texts while you size the GB bucket honestly.
International calls and premium numbers are different — check each retailer’s extras before you assume “unlimited” covers everything.
Worked examples
Renter on a 12-month tenancy: Smarty 40GB at £7 with our deal button keeps an exit door if you move to a Three-weak postcode later.
Parent buying a teen line: a £6 plan such as iD Mobile’s 15GB often covers school Wi-Fi habits; upsize only if gaming hotspotting appears in the bill.
Commuter who maps offline areas: 40GB is the safer mid-data bucket.
Related SwitchSquid SIM guides
For plans under £10 a month, 5G plans, Unlimited terms, family sharing and giffgaff or Smarty Unlimited, see our other SIM guides. This guide sticks to unlimited minutes and texts with mid-data allowances.
How to size 15GB versus 40GB without guessing
Open your phone’s data usage screen and look at the last full billing month. Add a buffer of about 20% if you expect a new commute. If three recent months average 10–13GB, a £6 plan such as iD Mobile’s 15GB is usually enough. If you sit at 28–35GB, giffgaff’s 40GB at £8 (18 months) gives more headroom; a 30GB plan such as Mozillion’s at £7.90 on EE suits steady users below about 25GB.
Hotspotting is the silent budget killer. A single evening of tethering a laptop for updates can burn 5–10GB. If that is weekly behaviour, stop pretending mid-data will hold.
Handset compatibility still matters. Unlock first. eSIM-capable phones can activate faster.
Credit checks, top-ups and bill-payer hygiene
Month-to-month value SIMs are often lighter on credit checks than 24-month handset contracts, but checkout prompts vary. Diary the first renewal so a promo step-up does not become a surprise. If you port a number, activate the new SIM first, confirm data with Wi-Fi off, then send the PAC.
FAQ
What are the best unlimited mins and texts mid-data SIMs?
On 27 October 2026, Smarty 40GB was £7 a month with our deal button on a 1-month plan, Smarty’s own site showed 32GB for £8 a month, and iD Mobile’s 15GB was £6 a month on a 1-month plan, all on Three’s network. On 28 October 2026, iD Mobile 40GB was £8 a month on a 12-month plan (Three) and Mozillion 30GB £7.90 a month on a 1-month plan (EE). For O2 households, giffgaff’s 40GB was £8 a month on an 18-month plan, £144 over the full term, and its 25GB plan £10 a month, as listed on 1 November 2026; giffgaff says the 40GB for £8 plan is for sign-ups before 4 December 2026. Confirm the price on the retailer’s page before you buy.
How much is Smarty’s £8 plan?
On 1 November 2026, SMARTY listed its £8 plan with 32GB a month on a 1-month plan with unlimited UK calls and texts, and 40GB was £7 a month with our deal button. Prices can change, so confirm at checkout.
Does unlimited mins and texts include premium numbers?
Usually not. Unlimited UK calls and texts typically exclude premium-rate and some international numbers — read the retailer’s plan terms.
Which network is Smarty on?
Smarty uses the Three network. giffgaff uses O2.
Can I keep my number on a cheap SIM?
Yes. Text PAC to 65075 from your current provider and port after the new SIM is active.
Should I buy Unlimited data instead?
Only if you regularly need more than about 40–60GB. Otherwise mid-data with unlimited mins and texts is usually enough.
What is the cheapest £6 SIM with unlimited calls and texts?
On 27 October 2026, iD Mobile’s 15GB and Smarty’s 5GB were both £6 a month on 1-month plans with unlimited UK calls and texts. Both run on Three’s network.
Do you earn commission?
Yes. SwitchSquid may earn a commission at no extra cost to you when you buy through the deal buttons on this page.
