SIM Sarge provider field guide

Which eSIM provider should you choose?

Airalo, Easysim, Firsty and Holafly solve different travel-data problems. The best choice is the one that fits your route, usage and final checkout price—not simply the loudest headline.

Compare providers See saving examples

The short answer

There is no universal winner.

Airalo is a broad marketplace with local, regional and global choices. Easysim can suit price-led shoppers who want conventional fixed-data bundles. Firsty is unusual because it can provide basic ad-supported backup data as well as paid global plans. Holafly is strongest when unlimited-style simplicity matters more than the lowest price.

The featured providers

These are commercial partners, but they are not interchangeable. Check the weaknesses as carefully as the strengths.

Airalo

Best for breadth and repeat travellers

Airalo offers country, regional and global packages across 200+ destinations. That breadth is useful when you want several data sizes, a multi-country plan or one familiar account for repeated trips.

  • Wide choice of local, regional, global and unlimited-style packages.
  • Airmoney loyalty rewards can help regular customers, though promo codes may not combine with rewards.
  • Plan rules vary: check network, calls, hotspot and fair use on the exact package.

Current SIM Sarge offers: NEWTOAIRALO15 for eligible new users or AIRALOESIM10 for eligible existing users.

Check Airalo plans

Easysim

Best for straightforward discounted bundles

Easysim is worth checking when you know how much data you need and want a conventional fixed-data or unlimited-style bundle. Its catalogue can expose network-level detail that helps with practical comparison.

  • Useful range of fixed-data sizes for light, standard and heavier trips.
  • The SIM Sarge partner route applies a confirmed 15% discount automatically.
  • Most plans are data-only; confirm unlimited fair-use and throttling details.

Current SIM Sarge offer: 15% is applied through the tracked link—no code required.

Check Easysim plans

Firsty

Best for backup data and flexible global use

Firsty uses one reusable eSIM across 176 countries. Its free tier can cover basic maps and messages after watching ads, while paid Classic and Unlimited options add faster or heavier usage.

  • Free data can provide an emergency connection without a card or subscription.
  • Paid plans can be useful for frequent multi-country travellers who prefer one installed eSIM.
  • Free data is ad-supported and limited; check speed, hotspot and high-speed allowances before relying on it.

Value angle: use the free tier as backup, then compare the paid app price with a destination-specific plan.

Explore Firsty

Holafly

Best for unlimited-style simplicity

Holafly is attractive when you expect heavy phone data use and would rather choose a trip length than monitor a fixed allowance. It can cost more, and hotspot or fair-use limits still matter.

  • Customisable day counts make it easy to match the plan to the trip.
  • A strong candidate for navigation, social media and heavy on-phone use.
  • Unlimited does not always mean unlimited full-speed hotspot use; inspect the destination terms.

Current SIM Sarge code: SIMSARGE. Confirm the actual reduction at checkout.

Check Holafly plans

Why shopping around pays

The cheapest sticker price can become poor value if the plan expires too soon, omits a country, blocks hotspot use or slows after a small allowance. Compare the complete mission.

  1. 1
    Match the route

    Check every country, island and stopover—not just the headline region.

  2. 2
    Match the usage

    Maps and messages need little; video, uploads and hotspot use need much more.

  3. 3
    Compare like with like

    Include validity, speed rules, hotspot allowance and whether calls or SMS matter.

  4. 4
    Apply the saving last

    Open the tracked offer, enter any code, then verify the final total before paying.

What can a discount actually save?

These examples show the arithmetic, not guaranteed plan prices. Eligibility, currencies and codes can change.

Occasional traveller

One £20 plan

15% off: £20 × 0.15 = £3 saved. Final cost: £17.

10% off: £20 × 0.10 = £2 saved. Final cost: £18.

Frequent traveller

Four £25 plans a year

15% off: £100 annual spend × 0.15 = £15 saved.

10% off: £100 annual spend × 0.10 = £10 saved.

A discount is only a saving if the underlying plan fits. Paying £17 for the wrong coverage is worse than paying £19 for the right one.

Try Airalo codes Get Easysim’s automatic 15% Compare Firsty Free and paid plans Try the Holafly code

SIM Sarge may earn a commission when you use these links, at no extra cost to you. Affiliate relationships do not make one provider suitable for every trip. Prices, coverage and discount eligibility can change; verify the checkout total and plan terms. Read the affiliate disclosure.