Seamless OSTelness Tech
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Related Products
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About
OpenSim is a travel eSIM service that provides prepaid mobile data plans for travelers. Users can browse and compare country, regional, and global eSIM plans online, choose a destination and data package, purchase securely, and install their eSIM using one-click setup, QR code, or manual installation details. OpenSim helps travelers stay connected while abroad without replacing their primary SIM. Plans support destinations worldwide, with both fixed-data and unlimited options available depending on the destination. Travelers can check eSIM compatibility, compare available plans, and activate their eSIM when they arrive at their destination. OpenSim also provides travel connectivity resources and setup guidance to help users prepare for international trips.
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About
Seamless OS is a cloud-native BSS/OSS telecom platform from Telness Tech that eliminates traditional telecom complexity by combining core billing, customer operations, service activation, and network-agnostic management into a single, fully automated stack designed for fast, digital-first mobile service delivery. It enables companies to launch their own branded mobile operators by supporting prepaid and postpaid plans, eSIM and travel eSIM products, mobile apps, checkout and payments, regulatory billing and taxation, and complete subscriber lifecycle management with modular APIs and webhook integrations. Built-in AI and agentic capabilities automate workflows, customer support, and operational tasks to reduce overhead and future-proof services for the AI era, while the platform’s flexible, modular architecture lets operators configure, bundle, and upsell products such as data packs, devices, and value-added services.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Supported
Android
Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Supported
Android
Supported
Chromebook
Not Supported
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Audience
Travelers / International Travelers / Consumers
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Audience
Telecom operators, mobile virtual network operators, digital brands, and non-telecom companies that want to launch, run, or scale fully digital mobile services
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$0.60
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
Free
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Company InformationOpenSim
Founded: 2025
Portugal
www.getopensim.com
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Company InformationTelness Tech
Founded: 2020
Sweden
telnesstech.com
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Integrations
No info available.
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Integrations
No info available.
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