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Mobility And Connectivity Rennes City Underground Goes 4G

Updated: Mar 9, 2022

Press Release

Date: 1st October 2018

SmartViser Operates Assessment Tests

This is now official since October 1st, 2018 Rennes City Underground is 4G enabled. SmartViser was proudly designed to operate the assessment tests in order to check the network coverage quality of the 4 historical French Mobile Network Operators.

4G Coverage Test is Passed

SmartViser observed that the 4G Network coverage has been significantly improved and measured a mean signal reception score of 90% over the city underground network. Rennes Metropole District had announced a clear improvement of the 4G signal reception level and SmartViser confirms that the promise has been held with the supply of a continuous network service quality level.

If we take a further look at the results network operator by the network operator, we can notice that there is no major difference, and this strengthens the choice as TDF as a skilled contractor on this project. It's important to mention that for the remaining 10%, the journey is fully 3G covered and SmartViser has observed no more coverage holes.

Web Browsing

At the same time, SmartViser test experts have checked the network coverage efficiency as we know that connectivity quality in a mobility context is key. This was achieved by measuring the number of web pages loaded in a 10 second maximum latency time (same operation as usually processed by ARCEP French regulator).

Within this frame, despite the same network conditions, SmartViser has reported differences between the four Operators. The indicators show that the best result conditions are held by one of them with a connectivity score of 55%. The differences are due to the core network management which may vary from one network operator to another.

It is important to say that all tests were synchronised from several similar smartphone devices operating on each operator network.


Gilles Ricordel, CEO of Smartviser confirms that the company is a recognised expert in User eXperience measurement over mobile networks with customers in many different countries. He added that similar testing had already been operated by his teams for the LGV

High-Speed Train launch in France (up to 320 km/h).

About SmartViser

SmartViser with long telecoms expertise and customer-centric innovation has developed the standalone test automation suite viSer that allows OEMs, ODMs, Mobile Operators, MVNOs, Regulators and any company offering Telecom Services to test, benchmark, monitor, troubleshoot or measure QoS/QoE on devices, connectivity, and mobile network technology.

SmartViser launched its first ViserMark Label to measure battery life performance translating mAh into straightforward battery life scores. Thus, allowing smartphone manufacturers to improve their battery life performance offering superior quality of experience for their end-users.

Headquartered in Rennes France and with an international presence, we are fully committed to supporting our customers and are proud to collaborate with key players in the industry. Our mission is to provide cutting edge innovation to help our customers succeed in today’s fast-evolving technologies and environments.

You can find more information about SmartViser and its innovative software on the Web at and ViserMark at:

French Version available here:

Press Contact: Debbie Bouffler:


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