Live network testing evaluates the performance and behaviour of a device under real-world conditions and is the only way to truly validate a product in its final state.

At Paragon, we use a combination of Field Trials and Interoperability testing methodologies to achieve this final state validation. We do this by analysing and reviewing your existing test strategies and, where necessary, combine these with new test cases from our knowledge of real-world use cases and from globally recognised, industry standard test specifications such as the GSMA’s TS.11.
This results in a solution which is tailored to fit the specific needs of your product and its end users, ensuring that there are no gaps in the testing model but also helping to lower costs by avoiding redundant or duplicated testing.

Field Trials

During Field Testing, operation of a mobile solution that incorporates real-time data exchange is inspected.
Outcomes of these can often exhibit symptoms that are not experienced in a laboratory testing environment.

Examples include:

  • Application appears to hang in weak or no signal areas
  • Application errors when connection timeout
  • Runtime errors when unexpected conditions occur
  • Stalled connections even in full signal areas

If lab testing is performed without the use of supporting live-network testing, there is a higher risk of issues going undetected through the development cycle and, in turn, being discovered by end-users on the final, released version of the product.


Our interoperability testing model takes the core principles of Field Trials testing and incorporates additional variables to ensure performance is not affected by external sources such as different network infrastructures or other interacting devices.

Network Interoperability

Field Trials ensures that a device can perform a specific task to a particular performance level, but how do you know this will be the case under different network conditions? Mobile networks are constantly evolving and are rarely static with frequent minor updates and occasional major infrastructure changes, and your device must be prepared for this. Similarly, if your customer decides to switch to a different network, or travels overseas and is roaming on other networks, you must be confident that the performance won’t be impacted in a way that competitors’ devices are not. While you cannot be expected to test on all available networks under all conditions, it’s a huge risk to test only one scenario.

By considering factors such as the intended market of the device, likelihood of inter-network interaction, potential impact to you if issues are discovered, project schedules and budgets, we will establish a network interoperability plan that is unique to you. Utilising networks which have the biggest direct impact to your product and also networks which offer significant infrastructure diversity to prevent against future changes and give confidence in the devices ability to perform globally.

Device Interoperability

A mobile device does not simply interact with the network, but also with a number of other devices whether that be the recipient of a call or message or an accessory of some kind. The same principles apply for device interoperability as they do for network interoperability; you can’t test all devices, but you shouldn’t test just one.

There are a huge number of device interoperability aspects that you may have to consider for your device. It is highly likely that a mobile device will be interacting for other devices types. Even for something as simple as sending a message, different OS vendors use different primary and secondary messaging technologies which may also be impacted by user settings or different software/firmware versions. Some devices will support different codecs for voice calls and wireless accessories will use different technologies and profiles.

Executing a device interoperability test strategy ensures that interaction with other connected devices is consistent and the users experience is not hindered by the devices that they interact with.

With an interoperability testing strategy designed and executed by Paragon, you can have full confidence of your devices ability to perform as expected under any conditions, connected to any compatible device. This significantly reduces the risk of after-sales issues and can help to reduce costs throughout the products lifecycle

To find out what a personalised field testing strategy would look like for your product, get in touch.

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