The safest SIM is not necessarily the plan with the most data. This comparison rewards providers that minimise data, prevent overspending, keep parental controls under the account holder's control and explain where protection stops.
Updated July 2026. Editorially independent — affiliate links are marked and do not influence scores.
Filter by data, controls and phone type. Sort by Safety Score™, price or data.
| Provider / plan | Price | Data | Calls & texts | Controls | Score | Best for | Link |
|---|---|---|---|---|---|---|---|
ParentShield Safe Stage 1 | £5.99 | 0MB | 100 mins, 100 texts; unlimited to two home numbers | Specialist | 92/100 | First phone / younger child | View plan |
ParentShield Safe Stage 2 | £15.99 | 2GB | Unlimited calls and texts | Specialist | 88/100 | Low-data smartphone / vulnerable user | View plan |
EE Protected Safer SIM | £9.00 | Unlimited at 0.5Mbps | Unlimited calls and texts | Strong, locked | 85/100 | Essential smartphone use | View plan |
EE PAYG Guided Safer SIM | £9.00 | 2GB at 25Mbps | 500 mins, 500 texts | Strong, locked | 83/100 | Contract-free safer use | View plan |
EE Guided Safer SIM | £12.00 | 3GB at 10Mbps | Unlimited calls and texts | Moderate default; strict available | 79/100 | Growing independence | View plan |
Tesco Mobile Safe Start SIM | £8.50 | 2GB | Unlimited calls and texts | Network filter + Sway.ly included | 74/100 | Lower-cost child plan | View plan |
EE Trusted Safer SIM | £15.00 | 10GB at 100Mbps | Unlimited calls and texts | Moderate default; strict available | 72/100 | Older teenager | View plan |
Vodafone PAYG 1 + Secure Net | £2/day used + Secure Net | Usage-based | PAYG rates | Configurable add-on | 64/100 | Occasional-use phone | View plan |
Asda Mobile Talk & Text | £4.00 | 0MB | Unlimited calls and texts | Low-data only | 62/100 | Budget communication | View plan |
Tesco Mobile Standard 2GB SIM | £7.50 (24m) / £8 (12m) | 2GB | Unlimited calls and texts | Basic network filter | 59/100 | Budget standard plan | View plan |
Asda's Talk & Text minimises data but is not a specialist child-safety product; it should never be ranked alongside ParentShield or EE solely on price.
Nine weighted categories reward data minimisation, locked controls and spending protection — not the largest data bundle.
| Category | Weight | Measure |
|---|---|---|
| Data minimisation | 20% | No data, small allowance, speed restriction, daily budgeting. |
| Control permanence | 15% | Whether the child can remove controls or use bypass tools. |
| Content protection | 15% | Adult content, social networks, dating, chat, SafeSearch. |
| Contact safety | 15% | Allow-lists, caller blocking, unknown callers, scam warnings. |
| Spending protection | 10% | Hard caps, premium numbers, charge-to-bill, in-app payments. |
| Time controls | 10% | Bedtime, schedules, data pause and daily limits. |
| Parent usability | 5% | App/portal quality, setup, alerts and reports. |
| Bypass transparency | 5% | Wi-Fi, VPN, Private Relay and encrypted DNS explained. |
| Privacy & proportionality | 5% | Age-appropriate monitoring; respect for growing independence. |
Strongest fit where parents need specialist communication controls and mobile data is unnecessary. Discuss privacy carefully — call and text monitoring is intrusive.
Excellent for minimising data and cost, but not a dedicated child-safety product. Parents must configure the handset and home Wi-Fi separately.
Strong balance for messaging, maps and location sharing. Protection applies over the EE network, not all Wi-Fi.
A useful value option, although its network controls are less comprehensive than ParentShield or EE Protected.
Appropriate where a child needs messaging, tracking and occasional browsing alongside enhanced monitoring.
Useful as children mature, but should rank below no-data or locked-strict options when data minimisation is the priority.
Mobile-network controls usually apply only while the device uses that provider's mobile-data connection. They may not filter content over Wi-Fi, inside apps or through VPNs, Apple Private Relay or custom DNS. Combine the SIM with Apple Family Sharing, Google Family Link and safe home-broadband controls.