Cookie Policy

Effective as of 16 May 2026

This page complements our Privacy Policy by detailing all cookies and trackers used on mybestsim.com, their purpose, their lifespan, and how you can control them.

1. What is a cookie

A cookie is a small text file placed by a website on your device (computer, phone, tablet) when you visit it. It allows the site to remember information about your visit (language, choices, session ID, etc.).

We also use similar technologies:

  • localStorage and sessionStorage: browser-internal storage areas, functionally close to cookies but not sent with every request.
  • Invisible pixels: small images used to measure openings or loads.
  • Technical identifiers generated on the fly (e.g. a random session ID).

All these technologies are referred to on this page as « cookies » for simplicity.

2. Your choices: accept, refuse, customise

When you first visited the site, a consent banner allowed you to:

  • Accept all: all optional cookies are enabled
  • Refuse all: only strictly necessary cookies are set
  • Customise: choose category by category

You can modify or withdraw your consent at any time, without affecting your browsing, by clicking the « Manage my cookies » link in the footer.

Your choice is stored for 6 months. After that, the banner will be shown again to collect a fresh consent, in line with CNIL recommendations.

3. The cookies we use

We classify our cookies in 3 categories.

3.1 Strictly necessary cookies (always active)

These cookies are essential for the operation of the site. They do not require your consent, in accordance with article 82 of the French Data Protection Act.

Cookie Issuer Purpose Duration
mbs_consent_v1 MyBestSim (internal consent manager) Remember your cookie choice (per category) 6 months
wordpress_test_cookie WordPress Check that your browser accepts cookies Session
wordpress_logged_in_, wp-settings- WordPress Keep your session if you are logged into the back-office Session / 1 year
__cfduid, __cf_bm Cloudflare Identify legitimate traffic, fight malicious bots 30 min / 1 year
mbs_popup_snooze_* MyBestSim Remember that you closed a popup so as not to show it again immediately 24 hours
mbs_popup_dismissals (localStorage) MyBestSim Same as above, in local storage form 24 hours

3.2 Audience measurement cookies (consent required)

These cookies help us understand how you use the site, which pages work well and which need improvement. They are set only after your explicit consent.

Cookie Issuer Purpose Duration Data transferred outside EU?
_ga, _ga_*, _gid Google Analytics 4 (Google Ireland Ltd.) Audience measurement (page views, duration, journey) 14 months max Yes, United States — governed by the Data Privacy Framework
_clck, _clsk, CLID, ANONCHK, MR, MUID, SM Microsoft Clarity (Microsoft Corp.) Heatmaps, anonymised session recording 1 year max Yes, United States — governed by the Data Privacy Framework
__cfbeacon, __cf_*_analytics Cloudflare Web Analytics Aggregated, anonymous audience measurement Session United States — anonymous aggregation
is_returning (localStorage) MyBestSim Detect returning visitors to tailor the experience 13 months No
session_id (JavaScript variable) MyBestSim Random session ID transmitted to our measurement server Duration of your visit only No (Cloudflare Worker EU/US)

3.3 Affiliate tracking cookies (consent required)

Our business model relies on affiliate commissions paid by eSIM providers when you buy from them after visiting our site. To enable this, cookies may be set when you click on an offer.

Cookie Issuer Purpose Duration
Cookies set by eSIM providers Each partner provider Attribute the affiliate commission to MyBestSim Variable depending on partner (generally 30 to 90 days)
Click identifiers transmitted in the redirect URL Third-party affiliate networks Conversion tracking Variable

Important: Affiliate cookies are set by the partner sites themselves, after your click. They are governed by the privacy policy of each partner.

4. Details of tools used

For tools that set cookies, here are the links to their own privacy policies:

5. Refuse cookies via your browser

In addition to our banner, you can configure your browser to block or delete cookies. Warning: blocking strictly necessary cookies may make the site unusable.

You can also opt out of advertising tracking via:

  • Your Online Choices (European initiative): youronlinechoices.eu
  • Do Not Track: most browsers can send this signal to sites.

6. What happens if you refuse cookies?

If you refuse audience measurement and affiliate cookies, you can continue using the site normally and access all eSIM comparisons. No essential functionality depends on these cookies.

However, we will not be able to:

  • Measure audience to improve the site
  • Offer you the most relevant offers based on your habits
  • Receive the affiliate commission when you buy from a partner (which funds the free nature of the service)

7. Your rights

You have the same rights over the data collected via cookies as those described in our Privacy Policy (access, rectification, erasure, objection, withdrawal of consent).

To exercise them: [email protected]

You can also file a complaint with the CNIL: www.cnil.fr

8. Changes to this policy

This policy may change if we add or remove tools. The version in force is always the one published on this page.

Version history

Version Date Changes
1.0 16 May 2026 Creation of the dedicated cookie page and rollout of the consent banner

To modify your consent: click on « Manage my cookies » in the footer. For any question: [email protected]