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ByteSIM Reviews 3,910

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TrustScore 5 out of 5

4.8

Telecommunications service provider
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Review summary

Created with AI, based on recent reviews

Evaluating 1,145 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the customer service for its quick and efficient responses, often resolving issues within minutes. Many highlight the helpfulness and professionalism of the staff, who guide users through processes like eSIM activation with patience and clarity, making the overall user experience smooth and easy. However, some customers reported dissatisfaction with the service, mentioning issues with unreliable reception, data cut-offs before the term ended, or difficulties with specific features like local numbers with SMS service. A few also noted slow responses to emails or unhelpful suggestions from customer service in certain situations.

What people talk about most

Customer service

People report positive experiences with customer service. Many customers praise the quick, responsive, and... See more

Response time

Users describe positive interactions with response time. Many customers praise the quick and responsive... See more

Service

Reviewers mention positive feedback about service. Many customers praise the excellent after-sales service,... See more

Staff

Customers had positive experiences with staff, praising their promptness, knowledge, and efficiency. Many... See more

User experience

Clients share positive opinions on user experience, often highlighting the ease of installation and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Excellent mobile data coverage across multiple south asian countries. Seamless mobile data transfer while crossing borders. I had taken 2 packages, a 7 days and a 1 day to cover my 8 days stay. On com... See more

Rated 5 out of 5 stars

I had difficulty in installing/activating the eSIM (I am not so good at these things) and an employee replied to me immediately. I send screenshots and noticed that the reply was not automatic. Someon... See more

Rated 5 out of 5 stars

I had a problem connecting my eSIM abroad so contacted customers services for advice. I’m not the most ‘tech-savvy’ person in the world but my problem was handled with great patience and in an underst... See more

Rated 5 out of 5 stars

Customer service responded VERY quickly (much quicker than I thought) and was able to resolve the problem that I had to my utmost satisfaction. I've used other eSIM providers in the past, found By... See more

Company details

  1. Telecommunications service provider
  2. Mobile network operator
  3. Travel deals

About ByteSIM

Written by the company

Bytesim eSIM

Stay connected worldwide with ByteSIM’s international travel eSIM. Say goodbye to expensive roaming charges and enjoy seamless mobile data wherever you go. Fast, Reliable, and Truly Unlimited – 5G High-Speed, our unlimited data plans provide top-tier network coverage in 200+ countries, including Japan, USA, Vietnam, Malaysia, Thailand, South Korea, India, China, and Indonesia. Get your eSIM today and stay connected hassle-free!

Features:

  • Affordable Pricing: ByteSIM offers cost-effective eSIM plans for tourists and business travelers, serving millions of users worldwide.
  • Reliable Network: As a licensed telecom operator, ByteSIM delivers fast, stable, and secure 5G connectivity in 200+ countries.
  • Flexible Plans: Choose from daily data (300MB/day), high-volume options (50GB), or truly unlimited data & call plans, with service durations from 1 to 30 days.
  • Local Number: Available in many ByteSIM plans for various countries, including the USA, Canada, UK, France, Thailand, Australia, Vietnam, and more, allowing you to receive calls and SMS seamlessly.

APP:

Support:

Contact info

4.8

Excellent

TrustScore 5 out of 5

4k reviews

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Asks customers to review

This company invites their customers to review, whether positive or negative

Replied to 100% of negative reviews

Typically replies within 24 hours

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Rated 5 out of 5 stars

Responsive and patient

Staff were responsive on Whatsapp, detailed, provided instructions that were easy to follow, definitely would purchase again thank you!

3 May 2026
Rated 2 out of 5 stars

No 5G throughout Singapore with an…

No 5G throughout Singapore with an iPhone 16 pro. Only connects with LTE. Support were no help solving it and just blamed lack of signal. It seems ByteSIM only support LTE in Singapore despite their website saying otherwise.

2 May 2026
Unprompted review
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Reply from ByteSIM

Hi Evman,

We’re sorry to hear that you were unable to get 5G in Singapore, especially with an iPhone 16 Pro.

Our Singapore eSIM plans support local high-speed networks, but whether the phone displays 5G or LTE can depend on several factors, including device network mode, iOS carrier settings, APN configuration, the selected operator, and the local network profile assigned to the eSIM.

This should not have been dismissed simply as “lack of signal.” If you contact our 24/7 support team with your order number, we can check the exact line configuration, guide you through manual network settings, or switch you to another available network profile if needed.

If the service still does not meet your expectations, we’re happy to review your usage and offer a fair refund solution.

Kind regards,
Sunny
ByteSIM Support Team

Rated 5 out of 5 stars

Their support via whatsapp was very…

Their support via whatsapp was very quick and we were able to solve my problem when my mobile data didnt work when flying on a different island in indonesia. Within 5 min the issue was fixed. Very happy with the result and their overall eSIM service

30 April 2026
Rated 5 out of 5 stars

I had difficulty in…

I had difficulty in installing/activating the eSIM (I am not so good at these things) and an employee replied to me immediately. I send screenshots and noticed that the reply was not automatic. Someone really tried to help me fast. I managed to activate my card without a problem!

29 April 2026
Rated 1 out of 5 stars

I purchased an e-sim for the Falkland…

I purchased an e-sim for the Falkland Islands at the end of Dec 2024. Afterwards, I was warned by locals that most likely there would be no service and unfortunately they were correct. E-sims for other countries worked well, but not this one which expired unused. I did email with the guarantee period but didn't receive a response. Waste of money. I see they don't sell this product any more which is good.

30 April 2025
Unprompted review
ByteSIM logo

Reply from ByteSIM

Hi KM,

We’re truly sorry for your experience with the Falkland Islands eSIM, and we apologize that your email was not handled properly at the time.

You are correct — we have since removed this product from sale after identifying that the local network availability was not reliable enough to meet our service standards.

If your eSIM expired unused, we would be happy to review the order and arrange a refund. Please contact our 24/7 support team again with your order number, or reply with the purchase email, and we’ll make sure this case is handled properly.

Thank you for bringing this to our attention, and again, we’re sorry for the inconvenience.

Kind regards,
Sunny
ByteSIM Support Team

Rated 5 out of 5 stars

Amazing customer service today

Amazing customer service today, I needed a refund on my order and the request was processed within the hour. So helpful and simple, very nice individual to speak with too (didn’t catch a name!) will definitely be ordering from here again

28 April 2026

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