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
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Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
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
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
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
About ByteSIM
Written by the company
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:
- Frequently Asked Questions
- Email: service@bytesim.com
- WhatsApp: +852 9243 7776
Contact info
China Resources Building, 26 Harbour Road, Wan Chai, Hong Kong
- service@bytesim.com
- bytesim.com
4.8
Excellent
4k reviews
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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Communication was really easy and they…
Communication was really easy and they quickly found a solution.
26 April 2026
Thank you for the excellent support by…
Thank you for the excellent support by Bella, great and fast help.
Regards
lennie
26 April 2026
Reply from ByteSIM
Hi,
We’re sorry to hear that you experienced poor signal and slow speed.
Signal quality can vary depending on the local coverage, network congestion, device settings, and the operator your phone automatically connects to. In many cases, our 24/7 support team can help improve the connection by guiding you to manually select another available network or adjust the configuration.
Please contact us with your order number, so we can check your plan and network status in detail. If the service did not meet your expectations, we’ll also review your case and offer a fair solution, including a refund where applicable.
Kind regards,
Sunny
ByteSIM Support Team
Reliable Service & Fast Support
I’ve used ByteSIM in Taiwan two years in a row. Last year, the connection was seamless everywhere I went. This year, I had a minor setup issue, but their WhatsApp support responded in under a minute to help me fix it. Now the speed is lightning-fast again! I highly recommend them for their consistent network quality and professional service.
25 April 2026
Amazing customer support
Amazing help! My eSIM wasn't working and the support did everything they could to get it to work. Now everything runs smoothly. Thank you again for your patience and help!
24 April 2026
beyond good service
Not only the operator solved my issues, but the operator went well beyond his/her tasks, with advice on how to juggle among multiple eSIMS
24 April 2026
Bought unlimited plan but data stopped at 20GB after two days
I bought unlimited 5G plan for Malaysia trip and the data was pretty much stop when I reached 20GB data used within two days. That is to say the hard cap was there and it did not state clearly so I was having hard time figuring out what's wrong with my internet and how should I manage the connection for the rest of the trip. Giving two stars for ease of use in buying the data and e-sim instllation.
24 April 2026
Unprompted review
Reply from ByteSIM
Hi Lotto,
Thank you for sharing your feedback, and we’re sorry for the confusion during your Malaysia trip.
Our unlimited plans may be subject to local operator Fair Usage Policy, but the service should not simply become unusable without support options. If you notice speed restriction, connection interruption, or any abnormal limitation, please contact our 24/7 customer support team immediately — we can check the line status and help remove or reset restrictions where possible.
We also understand that the policy may not have been clear enough, and we’ll continue improving how this is shown on our product pages.
Please contact us with your order number, and we’ll review your usage and network records. If the service did not meet expectations, we’ll also offer a fair solution, including a refund where applicable.
Kind regards,
Sunny
ByteSIM Support Team
Customer Service was very quick to to…
Customer Service was very quick to to respond and resolve the issue. Great job
21 April 2026
The customer service has been able to…
The customer service has been able to address my questions promptly and accurately.
14 April 2026
Very good service
21 April 2026
very professional and helpful team
4 April 2026
Best experience ever
19 April 2026
I had a very helpful conversation about…
I had a very helpful conversation about my eSIM. It was quick and effective even on Sunday.
19 April 2026
Great customer service
I had troubles to install my eSIM as I had only one device at my disposal and couldn‘t scan the QR-code. When I asked for help, the customer service promptly sent me the data for the manual installation. Thanks!
18 April 2026
Responds at once to help…
Responds at once to help connection/activation issues. The agent was Very helpful until issue resolved.
Thank you..
18 April 2026
It’s the best e-sim app
It’s the best e-sim app, with best price and especially best support! Thank you so much. I use it in many countries
18 April 2026
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