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
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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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Super wuick reply and extremely helpful
Thankyou so much. Immediate reply. Super helpful with screenshots and directions.
18 April 2026
was able to get prompt service to…
was able to get prompt service to resolve the SIM activation issue. much appreciated.
17 April 2026
Your customer service executive
Your customer service executive, Mr. Jack exceeded my expectations in responding to my request for assistance to activate the eSIM. He will be a real asset to the company with his speedy response and detailed analysis.
A 6 star rating for him. 🤗
17 April 2026
Good customer service!
Easy to contact customer service via whatsapp, and CS managed to resolve my issue easily.
17 April 2026
Quick access and great customer…
Quick access and great customer service, super responsive and helpful.
16 April 2026
False guarantee
I bought an E-sim tonight at 19:13 5 days, unlimited data for streaming the cricket. OI chose ByteSIM as there website it states "Speed Policy: For Unlimited Plans Guaranteed 1080p HD streaming speeds, even under Fair Usage Policy." After only 1 hr of streaming the cricket went off and we had used out data. I contacted customer service, who were very quick in answering. (giving 1 star for this) Informed them of issue and they said we had used our data for the day 1822.42 MB. So unlimited is not unlimited people and no Guaranteed of 1080 p. Now they are going to give me 80% of what I paid, I don't care about that, I don't want others be ripped off.
I have read your answer and don't believe it was answered to the questions.
The "Guarantees 1080p HD streaming speed, even under Fair Usage Policy" This statement is untrue and your answer reflects it.
16 April 2026
Unprompted review
Reply from ByteSIM
Hi,
thank you for sharing your feedback, and we’re sorry for the frustration caused.
We would like to clarify a few important points regarding “unlimited data” and the 1080p speed policy:
Our unlimited plans operate under a Fair Usage Policy (FUP), which is a standard practice across all global telecom operators. This means that while data is not capped in total usage, high-speed data may be subject to daily thresholds, after which speeds can be managed to ensure network stability for all users.
Regarding “1080p streaming”, this refers to the network’s ability to support HD streaming under normal conditions. However, actual streaming performance can still vary depending on factors such as network congestion, local coverage, server-side streaming optimization, and usage patterns (e.g. continuous video streaming).
We understand this may not have been as clear as it should be, and we are continuously improving how we communicate these details.
That said, as you mentioned, our team has already offered an 80% refund, which reflects our intention to resolve the issue fairly, even when the service has been partially used.
We truly regret that your experience did not meet expectations, and we appreciate your feedback as it helps us improve both transparency and service quality.
Kind regards,
Sunny
ByteSIM Support Team
The service is so good that I sent a…
The service is so good that I sent a lot of inquiries late at night, expecting the staff to reply in the morning, but I received responses immediately, and they were polite and able to answer my questions. Even though I had to issue a refund because my phone module was incompatible, they were still polite and responded really quickly to help me. I feel so bad that my phone doesn't support eSIMs. I would buy more here!
16 April 2026
Great response and quick fix by…
Great response and quick fix by following their instructions. Know what they were doing. Thanks!
16 April 2026
Saved the day ; got me roaming!
Saved the day
Very stressful coming to Morocco with an O2 contract from the uk; roaming is pretty much non existent
Had bought an orange esim and that and my o2 refused to work for data
Eventually bought a Byte SIM which also didn't work but the whats app help for Byte sorted it; when you upload the esim you had to manually turn on data roaming for the sim itself
15 April 2026
Customer service responded VERY quickly…
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 ByteSIM by chance and switched. Not looking back and actually wished I have found ByteSIM to begin with!
15 April 2026
Great price for esim
Great price for esim. Excellent customer service, activation issue resolved within seconds. Highly recommend
15 April 2026
Great Customer Service
Great Customer Service from Jack! The ByteSIM representative, Jack, was very professional and effective to get my ESim installed and operable. I highly recommend ByteSIM for your ESim card needs!
15 April 2026
Very effective and responsive
Very effective and responsive, sort out my queries in a minute. No hassle
14 April 2026
very good service
14 April 2026
Number one îs the best
14 April 2026
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