Bien que nous ne vérifiions pas les affirmations individuelles, car les avis reflètent l’opinion personnelle des utilisateurs, certains avis sont accompagnés du statut « vérifié » lorsqu’il est possible de confirmer qu’une interaction avec l’entreprise a eu lieu. En savoir plus

Pour protéger l’intégrité de la plateforme, chaque avis, qu’il soit vérifié ou non, est analysé par notre logiciel automatisé 24 h/24 et 7 j/7. Il identifie et retire tout contenu qui enfreint nos conditions d'utilisation, y compris les avis qui ne se basent pas sur des expériences authentiques. Nous sommes conscients que nous ne pouvons pas tout détecter, et vous pouvez nous signaler tout élément qui aurait pu nous échapper. En savoir plus

À propos de l'entreprise


Coordonnées de contact

3,8

Bien

TrustScore 4 sur 5

12 avis

5 étoiles
4 étoiles
3 étoiles
2 étoiles
1 étoile

A répondu à 50 % de ses avis négatifs

Répond généralement dans un délai d'un mois

Comment cette entreprise utilise Trustpilot

Découvrez comment les avis de l’entreprise sont collectés, notés et modérés.

Les entreprises sur Trustpilot n’ont pas le droit d’offrir des incitatifs ni de payer pour masquer des avis. Les avis reflètent l’opinion des utilisateurs et non celle de Trustpilot. En savoir plus

Noté 5 sur 5 étoiles

Super service

Kalle på 7 år og jeg havde en fest. En sjov og anderledes oplevelse. De 5 stjerner skal ses i lyset af virkelig god service og hjælp, særligt da vi ikke kunne finde de billeder vi havde lavet og kundeservice svarede meget hurtigt og derefter sendte billeder og video pr. mail. Super service.

17 mars 2026
Avis spontané
Noté 5 sur 5 étoiles

Honest and customer focused partners

Honest and customer focused partners

I am very happy to work with Hologram, after having had another connectivity provider that was both less transparent as well as mostly dismissive of our existence untill we threatened to leave. Whenever we have anything to ask about we get good answers, and more help that our other alternatives were willing to provide. There are many alternatives that are good, but after reviewing our options we felt like this was the one really great option for us.

11 septembre 2025
Avis spontané
Logo de Hologram

Réponse de Hologram

Thank you for your feedback. We value you as a customer and are appreciative of you detailing your experience!

Noté 5 sur 5 étoiles

Superb network coverage

I've been using Hologram sims in my GPS tracker for several years and the network connectivity globally has been superb, the billing and web payments system is clear and guarantees there are no hidden or unexpected costs.
Definitely sticking with hologram for future projects.

27 août 2025
Avis spontané
Logo de Hologram

Réponse de Hologram

Thank you for your feedback, Ivor! We are very appreciative to have you as a customer.

Noté 5 sur 5 étoiles

Easy to use administration pages

Easy to use administration pages, you can see every information about your IoT device you need. Price is affordable. There were absolutely no problems with the service, coverage, etc. in Hungary in the past 6 months.

14 août 2025
Avis spontané
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Réponse de Hologram

Thank you so much for being a Hologram customer and for your review! We are glad to hear that you are finding success using our services.

Noté 5 sur 5 étoiles

"I switched to Hologram from another…

"I switched to Hologram from another well-known provider after experiencing constant lag and disconnections. My customers were tired of hearing excuses about these issues. Since moving to Hologram, I haven’t received a single complaint—everything works perfectly. I especially love their customer support team, and I’ve even built custom features for my clients using Hologram’s API. It’s given me complete peace of mind for my business.

11 août 2025
Avis spontané
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Réponse de Hologram

Thank you, Daniel! We appreciate you as a customer and glad to see that you are finding success. Great to hear that you've leveraged our API for custom features.

Noté 5 sur 5 étoiles

Hologram’s IoT SIMs have provided me…

Hologram’s IoT SIMs have provided me with efficient, effective and economical connectivity.

11 août 2025
Avis spontané
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Réponse de Hologram

Thank you, James, for your review! We love to see that you're experience the "three E's" - efficiency, effectiveness and economical. We appreciate your support as a Hologram customer.

Noté 1 sur 5 étoiles

Unreliable Service – Eliminated from Our Provider List

We had been using Hologram SIM cards for about a month with no issues—until 4 days ago, when SIM cards began disconnecting one after another. All vehicles went offline, even though they were on the move. The dashboard showed them in “Ready” status but with no connectivity.

We contacted sales support via the website, submitted a ticket, but no one responded. Instead, we received automated replies from an AI bot via email, which couldn’t resolve anything. The AI chat on the website also blocked access to any real human agent, which is unacceptable for a mission-critical service.

We can't afford to lose our clients' trust or wait more than 5 days for a fix, so we made the decision to completely stop using Hologram SIM cards.

We are now switching to Emnify, which—while more expensive—offers much better performance, reliability, and full control over our fleet and connected devices. We're currently in a testing phase to choose our long-term provider, and Hologram.io is now permanently eliminated from our list.

We strongly do not recommend Hologram to any serious business.

27 juillet 2025
Avis spontané
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Réponse de Hologram

We are sorry to hear that you had such a poor experience. I have flagged your review with our Customer Support team for follow up. We certainly want to learn more about what happened so we can ensure this situation doesn't happen again. Thank you for providing a review so we are aware.

Noté 1 sur 5 étoiles

3 years of IOT horror

I’ve been with them 3years and their network is horrible. Constant network outages and they overcharge you for data/sms usage that you don’t even use. You CANT speak to a live person unless your getting new service. They will have your business so unstable. Worst service EVER. Bunch of amateurs in support. Scripted support. Epic Fail. Don’t use them. But it seem All IOT sim companies are the same. Full of Sh&!

28 novembre 2023
Avis spontané
Noté 1 sur 5 étoiles

Shameless SPAMMERS

Shameless SPAMMERS
Once you are on their CRM, that's a marriage! I have being trying to enforce my divorce since years now, unsuccessfully.
You have been warned now. Forewarned is forearmed.

8 novembre 2023
Avis spontané
Noté 2 sur 5 étoiles

Stop harassing me with spam emails.

Got a spam email from them out of nowhere and I just ignored it. Then I got another spam email only 2 days later:
Hi ***,

I reached out a few days ago to see if you're ready to engage ........

To me that is really pushy so I decided to leave this review.

12 mai 2022
Avis spontané
Noté 1 sur 5 étoiles

We were in the process of becoming a…

We were in the process of becoming a customer and had developer questions about their API. After brief correspondence with our lead developer, they reached out to him and offered him a job. If you want a scumbag partner that will try to poach your key employees, this is the partner for you.

3 septembre 2021
Avis spontané

L’expérience Trustpilot

Tout le monde peut écrire un avis Trustpilot. Les auteurs d'avis peuvent les modifier ou les supprimer à tout moment et les avis sont affichés tant que les comptes utilisateurs respectifs sont actifs.

Les entreprises peuvent utiliser nos invitations automatiques pour collecter des avis. Ils sont accompagnés du statut « Vérifié » pour indiquer qu'il s'agit d'expériences authentiques.

En savoir plus sur les différents types d'avis.

Nous avons des personnes dédiées et des technologies intelligentes pour nous aider à protéger notre plateforme. Découvrez comment nous combattons les faux avis.

En savoir plus sur le parcours des avis sur Trustpilot.

Voici 8 conseils pour écrire des avis de qualité.

La vérification permet de s'assurer que des personnes réelles écrivent les avis que vous lisez sur Trustpilot.

Offrir des incitatifs en échange d'avis ou demander des avis de manière sélective peut fausser le TrustScore, ce qui va à l'encontre de nos conditions d'utilisation.

En savoir plus