info@blugem.com +44 (0)1271 374 110

Telecoms

Government

Software

Customer Experience

Service Assurance

MVNOs

Revenue Assurance

Roaming Management

Fraud Management

Product Management

System & Data Migration

Regulatory Compliance

Regulatory Authority

Law Enforcement

QA & Test Management

Release Management

App Developer

How Fraudsters Find the Path of Least Resistance

Latest News

Delight customers. Drive loyalty. Grow profit.Turn service quality into your competitive edge. Discover what customers really think, slash churn with real-time automated testing, and deliver the flawless subscriber experience that drives loyalty and long-term profit. Give your teams the evidence-based insight they need to optimise performance enterprise-wide—and launch digital transformation projects with total confidence across every network.

Monitor, detect, resolve - in real timeSubscribers expect a flawless experience around the clock—and your operations teams need the real-time intelligence to deliver it. Our heart-beat testing runs continuously across end-to-end user journeys, triggering instant alerts the moment service levels slip. With evidence-based analytics at their fingertips, your teams can pinpoint and resolve issues fast, protecting performance, reputation and subscriber loyalty.

Stop revenue leakage before it costs youEvery change to your systems, contracts or rates is a potential leak in your bottom line—and in today's complex environments, those leaks add up fast. Our end-to-end test solutions trace the full revenue journey, from device usage through switch and mediation to the customer bill, pinpointing exactly where margin is slipping away. Take immediate, targeted action to protect your profits and secure long-term growth.

Interconnection assurance, end to endInterconnection is where revenue, compliance and customer trust all meet and where a single misrouted call or mispriced rate can cost you dearly. Our test solutions give you the power to interrogate networks and routes with precision, exposing fraud, verifying billing accuracy and ensuring full regulatory compliance. Launch next-generation services like eSIM and OTT voice and messaging globally with total confidence.

Stop bypass fraud eroding your marginsBypass fraud drains $6–7 billion from operators every year—hitting margins, degrading network quality and driving valuable customers away. Fraudsters move fast, and your defences need to move faster. Our solutions slot straight into the fraud manager's toolkit, running periodically to detect SIM Boxes, OTT bypass, CLI refiling and unknown originators—so you can shut down threats, recover lost revenue and safeguard your brand.

Get to market faster, get it right first timeIn a fiercely competitive market, every product launch is a chance to win loyalty—or lose it. A single missed customer journey, miscalculated tariff or broken notification can derail months of work. We partner with Product Managers and Go-To-Market teams to build rigorous test plans that cover every scenario, pre-live and live. From promotions and tariff refreshes to roaming zones and spend-caps, we make sure your launch lands perfectly, on time and on brand.

Transform with confidence, not compromiseEvery new system, platform or migration brings opportunity and risk. A single discrepancy between legacy and new environments can disrupt service, corrupt data and damage customer trust.

We help you transform with confidence, rigorously verifying the accuracy and functionality of new systems against legacy benchmarks in both test and production, so change delivers progress, not problems.

Regulatory peace of mind, guaranteedWhen regulators come calling, assumptions aren't enough—you need hard evidence. Communication providers face mounting pressure to prove that metering and billing platforms are accurate, transparent and fully compliant with telecom standards. Our independent, quantitative testing delivers the rigorous evidence you need to satisfy regulators, validate every charge against contract terms and protect customer trust.

Independent oversight for national authoritiesSelf-reporting only goes so far, national authorities need independent evidence to verify that communication providers are meeting their regulatory obligations. Our test equipment interfaces directly with the network to deliver impartial, verifiable proof of compliance. From exposing SIM box fraud and interconnect bypass to tracking emerging schemes targeting internet and OTT services, we help regulators safeguard consumer interests and recover the tax revenues rightfully owed.

Precision testing for law enforcement supportNational security and law enforcement agencies rely on accurate network information to do their critical work and any inaccuracy can have serious consequences. BluGem's automated test solutions verify that network data is being supplied and interpreted exactly as it should be giving agencies the confidence to act on intelligence that's been independently proven.

Global app assurance, local user insightYour app needs to perform flawlessly on every device, every operating system and every network your customers use wherever they are in the world. Our scripted, repeatable tests validate functionality and usability in the live environment, while our global network of international testers delivers language validation and unbiased user feedback across countries and carriers. Launch with confidence that your app meets customer expectations everywhere it matters.

Independent testing that keeps launches on trackDeadline pressure can quietly pull a product off course leaving bugs, network issues and customer frustrations to surface after launch. BluGem keeps you on track with independent testing throughout the development lifecycle. Our equipment validates that your product performs as intended on real-life networks, even in areas with slower speeds, giving you a rounded view of the true user experience at a fraction of the cost of human testers.

How Fraudsters Find the Path of Least Resistance Find out how fraudsters are bypassing network SMS firewalls by utilising other methods of delivery

Testing and Assurance

Fraud and Threat Intelligence

Specialist Solutions

Other

Test Call Generation

Roaming & International

Data & App Tracking

Independent Timing

Independent Rating

eSIM

SMS Engagement

Fraud Detection

Honeypots SMS spam detection

Firewall Testing

Emergency Services

IoT

IMS Voice Calls

Fixed Line & Broadband

Lawful Interception

iOS Testing

Functional Testing

Usability Testing

Latest News

Real test events on real devicesAudits are only the beginning. BluGem’s Test Call Generation platform combines a global network of real devices with TÜV SÜD BABT approved timing and byte accuracy to execute strategic test plans that protect networks, billing integrity and customer experience. From 5G and VoLTE to satellite and IoT services, BluGem targets the areas where issues are hardest to detect, delivered either as a fully managed service or a system operated by your own team.

Testing and assurance for roaming and international servicesWhen customers roam, your reputation travels with them. BluGem assures roaming and international services across more than 100 countries using automated TCG units and a global Crowd Network of real users on real devices. Roaming zones, tariffs and welcome messages are validated against real customer journeys, with rapid results delivered through a fully managed service.

Every byte measured, every charge verifiedWhen customers pay for data services, every byte matters and so does every billing decision behind it. BluGem’s data assurance platform measures exactly what reaches the handset and compares it against network records to identify missing CDRs, incorrect byte counting, failed usage caps and mistimed allowances. Gain the independent insight needed to resolve issues quickly, protect revenues and maintain customer trust.

Timing accuracy you can certifyWhen CDR timing is off, bundles misfire, durations distort, and revenue leaks. Whether you need regulatory proof or operational peace of mind, BluGem's TÜV SÜD BABT approved timing system provides an accurate point to compare like-for-like against your network records across multiple feeds. Spot the discrepancies others miss and resolve them with confidence.

Every tariff, every bundle, validatedBill shock drives churn faster than almost any other complaint, and in a world of complex tariffs, bundle stacking, roaming zones and free app traffic, mistakes are easy to make and costly to fix. BluGem's approved tariff modelling system independently re-rates your mediated CDRs to expose discrepancies fast. Paired with our Test Call Generator, it gives you a true end-to-end view of billing accuracy, with expert analysis and real-time reporting.

The end of plastic SIMs, the start of new risksThe plastic SIM is on its way out, and your customers are already expecting a seamless eSIM experience at home and abroad. BluGem's global network of genuine eSIM-capable Android devices puts your provisioning to the test, comparing physical and eSIM journeys side by side, validating rating, profile changes and notifications, and surfacing any fraud risk before it reaches your customers.

Check the accuracy of notifications sent to customersSMS messages are far more likely to be read than email, making them one of your most valuable channels, and one of the most costly to get wrong. BluGem's global network of real devices automatically captures and validates your notifications, from roaming welcome messages and geo-fenced promotions to fraud alerts and balance statements. Verify delivery, content, timing and triggers with real-time screenshots of exactly what your customer sees.

Bypass detection fraudsters can't predictFraudsters are faster, smarter and more relentless than ever, bypassing interconnects, refiling CLIs and shifting traffic onto OTT platforms to evade detection and steal revenue. BluGem fights back using real subscriber SIMs, fixed lines and SIP clients across the globe, combined with a Global Crowd of 100,000+ users that continuously rotates traffic sources so fraudsters cannot predict or track testing activity. Detect bypass, CLI refiling and OTT fraud quickly with instant alerts and clear pass/fail reporting.

Independent intelligence on scams and spam targeting your networkScammers and spammers are constantly targeting your customers, and operators need an independent view of the threats reaching their networks. BluGem’s honeypot service quietly captures unsolicited voice calls and SMS, classifies activity against known scam and spam patterns, and provides the evidence needed to strengthen defences, support law enforcement and demonstrate regulatory compliance.

Are criminals finding ways around your firewalls?Deploying a firewall is only the beginning. Even with major investment, scams, bypass attacks and evolving threats still reach subscribers, and without independent validation it's hard to know how effective your defences really are. BluGem combines proactive controlled-traffic testing with passive monitoring to reveal how your firewalls perform against real-world attacks and highlight where updates are needed.

The most important calls on your networkFew obligations are as critical as connecting the public to police, fire and ambulance services, and failures have tragic, real-world consequences. BluGem independently verifies that emergency calls route correctly across CS, VoLTE, VoWiFi and 5G, at home and while roaming, on physical SIM, eSIM and no SIM. With affordable monthly programmes, location-ID checks and network fallback testing using real handsets worldwide, we help you prove every emergency call connects when it matters most.

The internet of things, assuredConnected devices are reshaping every sector, but a single glitch can stall adoption and erode confidence in your network. BluGem independently verifies the usability, functionality and communication accuracy of IoT services, from pre-launch snapshots to long-running heartbeat monitoring. With expert CDR analysis and a global testing footprint, we help you launch and grow your IoT proposition with confidence.

SIP, VoLTE and VoWiFi assuredPacket-switched voice gives customers a richer experience, but the more protocols you support, the more places errors can hide. BluGem methodically tests every combination of SIP, VoLTE, VoWiFi, GSM and PSTN at both origination and termination, on real Android devices and across our global network. From CS fallback and missing CDRs to roaming partner failures, we catch the issues before your customers do.

Broadband and PSTN assurance you can trustHome working, streaming and online gaming have pushed broadband usage to record highs, and at that scale, even the smallest billing error multiplies into serious revenue impact. BluGem independently validates ADSL, PSTN and broadband services with approved timing, full CDR reconciliation and accurate data tracking, so you can be confident every customer is billed correctly, every time.

Be ready when the authorities callWhen the authorities request subscriber data, there's no room for missing records or mismatched IPs. A single gap can mean fines, reputational damage or a criminal walking free. BluGem's IP Address Resolution confirmation product runs scheduled 24/7 data events across mobile and broadband, tracking internal and external IPs and correlating them to each SIM, so you can prove your Lawful Interception system delivers complete, accurate records every time.

Same product, different platform, real riskRoughly half your customers are on iPhone, yet iOS can behave very differently from Android. Different APNs, tariff configurations and app protocols all create platform-specific problems that can quietly cost you revenue and goodwill. BluGem's globally distributed iOS testers run any test plan you need on real Apple devices, fully reconciled against your network CDRs, so the experience is consistent whichever phone your customer chose.

Validate system functionality through defined test journeysUndetected errors don't just frustrate users, they can stop your product working altogether. BluGem combines automated test event generation with experienced multi-lingual crowd testers to validate scripted journeys against your specification, on real devices, in the locations and networks that matter. With evidenced defects, risk categorisation and a dedicated project manager, you launch faster and with confidence.

Unbiased end-user feedbackYou've invested in a great product, but does it actually feel right to the people who'll use it? Skipping usability testing risks missing your target audience, frustrating customers and damaging your brand. BluGem's international crowd network delivers unbiased, real-world feedback from a wide demographic, with evidenced reports and a dedicated project manager, so you go to market with confidence and the insight to keep improving.

How Fraudsters Find the Path of Least Resistance Find out how fraudsters are bypassing network SMS firewalls by utilising other methods of delivery

Company

Latest News

Get to know the team behind your testingOur experts are approachable and always ready to help you with any request. Meet our management team below.

Our journey to where we are todayWe've come a long way in 20 years. Find out where it started and the steps along the way to supporting some of the worlds largest telecommunication networks.

How we care for people and natureFinding harmony for people and nature has always been central to BluGem’s business philosophy. The location of our base of operations alongside a UNESCO biosphere reserve provides our staff with the opportunity to engage in hands-on preservation and team building in some stunning coast and moorland in North Devon, England. This is complemented by a range of charitable activities that support health, sport and culture.

Come and join the BluGem teamOur team is always expanding. See if we have any roles that fit your skill set.

How Fraudsters Find the Path of Least Resistance Find out how fraudsters are bypassing network SMS firewalls by utilising other methods of delivery

Latest News How Fraudsters Find the Path of Least Resistance

info@blugem.com +44 (0)1271 374 110

BluGem honeypot device receiving SMS and analysing for scams and spam

SMS Honeypot

Independent intelligence on scams and spam targeting your network

Scammers and spammers are constantly targeting your customers, and operators need an independent view of the threats reaching their networks. BluGem’s honeypot service quietly captures unsolicited voice calls and SMS, classifies activity against known scam and spam patterns, and provides the evidence needed to strengthen defences, support law enforcement and demonstrate regulatory compliance. Fast to deploy with no network integration required.

Fraudster running a SIM farm with racks of devices to send out spam and scam messages

Interconnect Fraud Testing

Bypass detection fraudsters can't predict

Fraudsters are faster, smarter and more relentless than ever, bypassing interconnects, refiling CLIs and shifting traffic onto OTT platforms to evade detection and steal revenue. BluGem fights back using real subscriber SIMs, fixed lines and SIP clients across the globe, combined with a Global Crowd of 100,000+ users that continuously rotates traffic sources so fraudsters cannot predict or track testing activity. Detect bypass, CLI refiling and OTT fraud quickly with instant alerts and clear pass/fail reporting.

Mobile phone running the BluGem application tracking mobile data while walking through a city

Data and App Tracking

Every byte measured, every charge verified

When customers pay for data services, every byte matters and so does every billing decision behind it. BluGem’s data assurance platform measures exactly what reaches the handset and compares it against network records to identify missing CDRs, incorrect byte counting, failed usage caps and mistimed allowances. Gain the independent insight needed to resolve issues quickly, protect revenues and maintain customer trust.

Roaming Test Services

Global roaming service assurance

When customers roam, your reputation travels with them. BluGem assures roaming and international services across more than 100 countries using automated TCG units and a global Crowd Network of real users on real devices. Roaming zones, tariffs and welcome messages are validated against real customer journeys, with rapid results delivered through a fully managed service.

Test Call Generation

Real test events on real devices

Audits are only the beginning. BluGem’s Test Call Generation platform combines a global network of real devices with TÜV SÜD BABT approved timing and byte accuracy to execute strategic test plans that protect networks, billing integrity and customer experience. From 5G and VoLTE to satellite and IoT services, BluGem targets the areas where issues are hardest to detect, delivered either as a fully managed service or a system operated by your own team.

Product and service assurance

Our patented test solutions are guaranteed to find issues that cost network operators money and cause upset for their customers.

We work in partnership with operators, governments and software developers to ensure everybody has confidence in the diverse services supplied by modern networks. Sophisticated independent testing reduces your risk, demonstrates your compliance and protects your brand.

Choose your sector

Discover why network testing is relevant to you

Telecoms

Providing test and assurance solutions worldwide, to network operators and enablers of all sizes.

Improve margins, identify fraud, and maintain regulatory compliance.

Government

Empowering regulators to monitor the quality of communications services and accuracy of charging.

Protect consumers and safeguard competition in the communications market.

Software

Ensure apps perform as intended with automated testing of their functionality and usability on real phone networks.

Keep to your delivery schedule with efficient testing throughout the development lifecycle.

Fraud Detection

Protect your business and your customers

Test Call Generation

Fully automated and scheduled test event execution

Roaming & International

Testing and assurance for roaming and international services

Data & App Tracking

Byte-accurate app usage and streaming, including 5G

Honeypots SMS spam detection

Independent intelligence about scams and spam on your network

Firewall Testing

Are criminals finding ways around your firewalls?

Independent Timing

Compare against an approved and accurate timestamp

Independent Rating

Comprehensive tariff and bill accuracy validation

eSIM

Faithfully recreate the eSIM experience at home and abroad

SMS Engagement

Check the accuracy of notifications sent to customers

Emergency Services

Be sure that your customers calls to emergency services get through no matter where they are

IoT

Test IoT devices using various protocols including Sigfox and LoRA

IMS Voice Calls

Validate packet-switched call methods (SIP, VoLTE and VoWiFi)

iOS Testing

Understand how app performance differs for iOS and Android

Fixed Line & Broadband

Validate usage and billing for ADSL and PSTN connections

Functional Testing

Validate system functionality through defined test journeys

Usability Testing

Test how well the system works with unbiased user feedback

Lawful Interception

Validating telco data to support law enforcement and intelligence agency requests

Global Coverage

Over 100 countries

We test an expansive range of end-user devices and operating systems to validate products and services on home and international (roaming) networks.

Audited Quality

ISO and TÜV SÜD Certification

BluGem's processes comply with the ISO 9001 Quality Management Systems standard and our equipment is certified to give precise measures of network activity by TÜV SÜD.

Flexible Payment

Capex or opex

Contracts are structured so you can buy equipment, obtain a service managed on your behalf, or a hybrid of the two.

Contact the experts

Some of our valued customer partnerships

Proven case studies

5G roaming testing

Functional User Testing

Fair usage data policy and notifications whilst roaming
Multiple European destinations and partner networks tested
Impact: Data usage limits not all working correctly, causing leakage
Revenue loss: significant operator losses from excessive data consumption

Platform migration

TCG timing and rating

Regular issues with the accuracy of the start time and duration of new CDRs
Detected issue when comparing 3-way CDR reconciliation reports
Impact: revenue leakage due to under-recorded call durations and poor bundle alignment
Recovered revenue: over $100k of call charges

Roaming service

Roaming Tariff Rates

Roaming audit to verify call usage charges covering key roaming zones
All calls under-billed when calling premium rate numbers
Impact: $0.25/min charged for calls worth $3/min
Recovered revenue: estimated at over $150k

IMS voice audit

New Product Launch

Validate new VoLTE/VoWiFi live product network launch
Billing CDRs incorrectly charged 150 sec call durations instead of 30 sec
Impact: 12% of test file had significant over-metered call duration results
Regulation and customer satisfaction: overcharging and negative customer experience

Bypass fraud service

Detect SIM Box Bypass Fraud

Targeted multiple telco country routes to find interconnect fraud bypass
Profile of 30 countries, 68 operators identified SIM box and CLI refiling fraud
Impact: 7 bypass SIMs detected from 3 routes plus 19% refiling fraud
Fraud recovery: telco blocked bypass SIMs and investigated SIM box fraudsters

TCG data audit

Data & App Tracking

Data tariff usage and billing accuracy
Incorrect data charges when app streamed music outside of bundle limits
Impact: 5% data usage incorrectly charged from Android background data
Regulation and customer satisfaction: wrongly configured advertising domains caused overcharging of data

iOS roaming audit

Functional user testing

Assure Apple devices and tariff products whilst roaming in key zones
Crowd testing detected failed welcome messages and wrong spending caps
Impact: customers lose access to data roaming
Revenue and customer satisfaction: lower usage and poor experience

iPad roaming services

USABILITY TESTING

Test iPad usage with SIM for data, SMS and voice services
Check welcome SMS with service support details and rates
Impact: Apple's Continuity system required for SMS and voice
User experience: iPad with SIM can use data without notification of fees or caps

New website launch

Functional testing

Website functionality tests across multiple browsers
International and domestic tests via end-user devices
Impact: over 150 defects identified in a production environment
Product validated: Error-free release achieved assuring brand quality status

Regulator QoS audit

TCG timing and rating

Validating all domestic operators for service quality
Benchmarking operators' voice, SMS and data accuracy
Impact: Service quality fell below thresholds for an operator
Service quality: evidenced results helped the operator correct network issues

Our latest news

18th May 2026

How Fraudsters Find the Path of Least Resistance

Find out how fraudsters are bypassing network SMS firewalls by utilising other methods of delivery

Read the full article

2nd April 2026

How Fraudsters Bypass Network Simbox and Refilling Controls

If you want to detect bypass fraud, it’s time to upgrade your approach.

Read the full article

26th February 2026

Test Call Assurance to Support Emergency Services

Let us give you peace of mind that your emergency calls are getting through

Read the full article

What our customers say

Hutchison 3G UK Stuart Waton, Revenue Assurance Team Lead

Having used BluGem TCGs for several years to ensure completeness and accuracy for domestic Retail usage, we were confident that they would be the right choice for our rapidly growing Wholesale business.

Thanks to BluGem’s experience and flexibility, process and leakage issues were identified and resolved quickly that have paid for the service several times over, and we had no hesitation in recently extending that contract to support our Wholesale business through continuing growth and transformation.

Hutchison 3G UK Stuart Waton, Revenue Assurance Team Lead

Sure (CIIM) Channel Islands & Isle of Man Marco Cassiano, Fraud and Revenue Assurance

We selected BluGem to test our IMS platform based on the accuracy of their IMS/SIP test call solution and independent CDR usage and rating verification services.

BluGem detected several issues from the testing, which were subsequently fixed by Sure and retested by BluGem. Our assessment of the resolved issues presented a positive ROI for the test service that was delivered on time and concluded with a comprehensive test analysis report.

I would recommend BluGem for their dynamic approach to delivering solutions and results on time and for their innovative TCG services supporting IMS/SIP technologies.

Sure (CIIM) Channel Islands & Isle of Man Marco Cassiano, Fraud and Revenue Assurance

Ultra Mobile Rizwan Kassim, Co-Founder and Chief Strategy Officer

We often look outside our own team to solve complex problems in a hurry.

BluGem was able to offer a complete and thoughtful assessment - generating test calls to ensure that our wholesale carrier, international carrier and local soft switch CDRs and billing were all compliant.

I wouldn’t hesitate to use them again.

Ultra Mobile Rizwan Kassim, Co-Founder and Chief Strategy Officer

National Telecommunications Corporation Hassan Mukhtar, Head Quality of Service Section

The BluGem Test Call solution is a powerful system, easily to administrate in addition to its flexibility when it comes to tariff planning.

As a Telecom Regulator this system has helped us to monitor and verify operators' charging systems. Moreover, the TCG solution has helped to discover and provide us with verification of the causes of the leakage in billing from one of the mobile operators. Additional to that, we have been totally satisfied with the quick support and response of the service.

National Telecommunications Corporation Hassan Mukhtar, Head Quality of Service Section

JT Global Adrian Youd, Head of Fraud and Revenue Assurance

We been delighted with the performance of BluGem's Test Call Generator. It was deployed and ready for use in three days, and its intuitive design made staff training easy. It has helped us become more efficient and effective - we now spend less time on housekeeping tasks and more on analysis. Overall, we are glad we made the move from our previous supplier.

JT Global Adrian Youd, Head of Fraud and Revenue Assurance

Put us to the test

We are quick and efficient at delivering both out-of-the-box systems and tailored solutions. Contact us today for service that is both personal and professional.

Start testing

SMS Honeypot

Interconnect Fraud Testing

Data and App Tracking

Roaming Test Services

Test Call Generation

Product and service assurance

Choose your sector

Discover why network testing is relevant to you

Telecoms

Government

Software

Solutions

Fraud Detection

Test Call Generation

Roaming & International

Data & App Tracking

Honeypots SMS spam detection

Firewall Testing

Independent Timing

Independent Rating

eSIM

SMS Engagement

Emergency Services

IoT

IMS Voice Calls

iOS Testing

Fixed Line & Broadband

Functional Testing

Usability Testing

Lawful Interception

Reasons to choose us

Global Coverage

Over 100 countries

Audited Quality

ISO and TÜV SÜD Certification

Flexible Payment

Capex or opex

Some of our valued customer partnerships

Proven case studies

Our latest news

How Fraudsters Find the Path of Least Resistance

How Fraudsters Bypass Network Simbox and Refilling Controls

Test Call Assurance to Support Emergency Services

What our customers say

Put us to the test