Why PAYG Beats Data Pools

KeySIM is Pay As You Go (PAYG)

With KeySIM's transparent PAYG model, you pay only for what you actually use:

  • Monthly access fee charged only for active SIMs
  • Data billed per MB consumed by each SIM
  • SMS billed per message sent or received
  • Voice billed per second with no rounding

This means zero waste, zero penalties, and complete transparency — you're never locked into buying data you don't need or paying overage charges when you exceed arbitrary limits.

Traditional data pools often look flexible — until you do the maths.

With a pool, you either:

  • Pay for data you don't use, or
  • Pay overage penalties when you exceed your limit

Either way, you end up paying a higher effective rate per MB than PAYG.

Example 1 – Paying for unused data

A company buys a 1,000 GB pool at £3 per GB = £3,000 total.

If they only use 700 GB, they've effectively paid:

£3,000 ÷ 700 GB = £4.29 per GB
Example 2 – Paying overage penalties

The same company uses 1,200 GB.

Their 1,000 GB pool costs £3,000, but they pay £5 per GB for the extra 200 GB (£1,000 more).

£4,000 ÷ 1,200 GB = £3.33 per GB
Example 3 – Uneven usage across SIMs

A company has 100 SIMs sharing a 500 GB pool. The problem? Not all SIMs use data equally:

  • 20 SIMs use their full allocation (10 GB each = 200 GB total)
  • 50 SIMs use moderate data (4 GB each = 200 GB total)
  • 30 SIMs barely transmit (1 GB each = 30 GB total)

Total usage: 430 GB out of 500 GB pool

The issues:

  • You've paid for 70 GB of unused data (wasted money)
  • The high-usage SIMs are constrained by the pool limit, potentially causing service issues
  • The low-usage SIMs are subsidizing the high-usage ones, making cost allocation impossible
  • No flexibility — if usage patterns change, you're stuck until the next billing period
With KeySIM PAYG, you only pay for what you actually consume.

No waste. No penalties. No cross-subsidization. Just predictable, fair billing per SIM.

Transparent Pricing Plans

Choose the plan that fits your deployment needs

Narrowband / CAT-M Plans

Vodafone & O2 Networks Only

SIM Quantity

100+

 

Monthly SIM Rental

£0.95

per SIM

Data

£0.005

per MB

Ideal for low-bandwidth IoT devices requiring minimal data transmission

Standard UK Multi-Network Plans

Vodafone · O2 · EE · Three

SIM Quantity

1 - 10

 

Monthly SIM Rental

£3.50

per SIM

Data

£0.0035

per MB

SIM Quantity

10 - 99

 

Monthly SIM Rental

£3.00

per SIM

Data

£0.003

per MB
100+ SIMs
or >2000 MB per SIM/month
Price on Application
Volume discounts automatically applied. The more SIMs you deploy, the better your rates.

Additional Services & Rates

SMS and Voice

  • SMS (UK) £0.05 per SMS
    Free to receive · Send via KeySIM Portal at no charge
  • Voice £0.05 per minute
    Billed per second with no rounding
  • All KeySIMs have international numbers

EU & Global Roaming

  • European Roaming
    Monthly Rental £4.00 per month
    Data Rate £0.0095 per MB
  • Global Roaming Price on Application

KeySecure Services

Private fixed IP addressing and secure VPN tunnels for your IoT deployments, protecting your devices from public internet threats.

Price on Application

Enhanced Support

24/7 Helpline access for critical support needs. Available for deployments with a minimum of 100 SIMs.

Per SIM / Month £1.00
Minimum 100 SIMs required

Cost-Control & Security Features

KeySIM makes cost management simple and transparent

Every SIM can be monitored and controlled directly from the KeySIM Portal:

Usage Alerts

Automatic email notifications when a SIM reaches chosen data thresholds (e.g. 50 MB, 100 MB, 500 MB)

Data Caps

Set hard limits per SIM or group of SIMs to prevent unexpected costs

Device-Change Alerts

Get notified if a SIM is removed from one device and inserted into another

Real-Time Statistics

View live usage by SIM, account, or deployment group for complete visibility

These controls are included with all KeySIM accounts and make PAYG pricing fully predictable.

Key Points

  • Pricing for UK businesses of all sizes — from single-site SMEs to nationwide deployments
  • Discounted rates available for registered UK charities — please enquire for details
  • Pay a monthly access fee only for active SIMs
  • Data billed per MB
  • SMS billed per message
  • Voice billed per second
  • Ideal for connected devices, IoT telemetry, CCTV, and smart infrastructure
  • Also suitable for UK / EU smartphone backup connectivity
  • Personal users: SIMs for individual or non-business use are available through an approved partner — please complete the form below for details

Get Your Free KeySIM Pricing Quote Today

Request a trial SIM or speak to our team about your specific requirements

Request Your Custom Quote

Complete the details below to receive a customized no-obligation quote for KeySIM IoT connectivity solutions tailored to your business needs.

Understanding KeySIM Pricing

Before completing the form, here's what you should know about our transparent PAYG pricing model:

  • Monthly Access Fee: Only pay for active SIMs you're using
  • Data: Pay per MB consumed - ideal for IoT devices
  • SMS: Pay per SMS sent or received
  • Voice: Pay per second (KeySIM's have international phone numbers)
  • Primary Use: Data connectivity for IoT devices and equipment
  • Popular Option: UK/EU smartphone backup connectivity
  • Personal Use: SIM's for personal use available through partners - complete form for details
Important: KeySIM is generally not designed for use as a primary smartphone SIM. We do not offer unlimited data plans.

Speak to Our Team

Need immediate assistance? Call us for instant support, technical guidance, and pricing information.

+44 (0) 161 706 0680

Why Businesses Choose KeySIM for IoT Connectivity

Immediate Expert Support

No support tickets. No waiting. No delays. Get direct access to our technical team when you need it - not hours or days later.

Multi-Network Coverage Across UK

Connect seamlessly to Vodafone, O2, EE, and Three networks for superior nationwide coverage and automatic failover for mission-critical applications.

Enterprise-Grade Security

KeySecure provides private fixed IP addressing and secure VPN tunnels for your IoT deployments, protecting your devices from public internet threats.

UK-Based Support Team

Proudly UK-based with local expertise, serving customers across the United Kingdom and providing remote support worldwide for global IoT deployments.

Fast Response Times

We aim to respond to all pricing inquiries and technical questions within 24 hours on business days. Urgent requests receive priority attention.