📞 Tango: mobile-first operator with simple business telephony
Tango SA is Luxembourg's second-largest telecom operator and part of the Proximus Group. Its business phone product, Fix4Bizz, is designed for freelancers and small teams that already use Tango for mobile and internet. Here is what that actually means for a business choosing a phone system.
⏱ 6 min read · 🇱🇺 Local provider · 📅 Updated April 2026 · 🔗 tango.lu
🏢 Who Tango is
Tango SA is a Luxembourg telecom operator, ILR-regulated, and Luxembourg's second mobile network after POST. Tango is part of the Proximus Group, the Belgian incumbent operator.
For businesses, Tango positions itself as a single supplier for mobile, internet, and telephony, with an emphasis on small teams that want one provider for everything. Its business phone product is Fix4Bizz.
📦 What Tango offers
A bundled telephony stack tied to Tango's own network. Convenient for existing Tango customers, constrained for anyone outside that ecosystem.
📞 Fix4Bizz Cloud PBX
A hosted phone system with auto-attendant, voicemail, call forwarding, call pickup groups, call cascade, and absence management. All features included in every plan, no tiered packages.
📱 Bizz2Go mobile app
An iOS and Android app that extends the business number to employees' smartphones. Runs over Tango's mobile network (not WiFi), so a Tango mobile subscription is required for each user.
🖥️ Yealink desk phones included
Hardware rental covered in the monthly fee. Yealink T42U, T46U, T48U, DECT, and conference models are available.
🌐 Tango internet required
Fix4Bizz only works on a Tango internet connection. If the office uses a different ISP, Fix4Bizz is not available. This is the most important factor to understand before choosing.
Full product details at tango.lu.
⚖️ Quick compare with two local rivals
Tango is a local Luxembourg operator. This page compares it against two other local operators, selected at random from the same category.
📞 Tango
Local operator · this page
You are here
🔗 tango.lu
ILR-regulated: ✅
Public pricing: ⚠️ starting price only
ISP independence: ❌ Tango internet required
Greater Region numbers: ❌ LU only
SIP trunks: ⚠️ limited
Support languages: 3
📡 Mixvoip
Local operator
ILR-regulated: ✅
Public pricing: ✅
ISP independence: ✅ any ISP
Greater Region numbers: LU, BE, DE, FR
SIP trunks: ✅
Support languages: 4
🏢 DEEP Telecom
Local operator
🔗 deep.eu
ILR-regulated: ✅ via POST
Public pricing: ❌ quote only
ISP independence: ⚠️ partial, often bundled
Greater Region numbers: ⚠️ LU-focused
SIP trunks: ✅
Support languages: 4
Comparison reflects public information. Sources linked from each provider page. Not a ranking.
👥 Typical client profiles
Based on how Tango positions Fix4Bizz.
👤 Freelancers and sole traders
Want a single supplier for mobile, internet, and business phone. Fix4Bizz makes sense when Tango already covers the other two services.
🏪 Small businesses with 1 to 15 employees
Existing Tango customers who need a simple phone system with desk phones included and no complex setup. Tango handles hardware and configuration.
🤝 Teams that mostly use mobile
Bizz2Go is the key product, routing business calls through employees' Tango SIMs. Works well for field teams and hybrid workers, as long as everyone is on a Tango mobile plan.
📍 Luxembourg-only operations
Fix4Bizz is designed for businesses calling within and to Luxembourg. Cross-border operations are not its target use case.
🎯 Where Tango stands apart
Three positioning points that the comparison table above does not fully capture.
📦 All-in-one bundling
Mobile, internet, and telephony from one operator. For a 5-person business without IT staff, that simplicity has real value.
💰 Low entry price
Fix4Bizz starts from 9.90 EUR per user per month, excl. VAT. One of the lowest published starting prices in the Luxembourg market. Real total cost is higher once internet and mobile are factored in.
🤝 Proximus Group alignment
Tango is part of the Proximus Group, which also owns Proximus NXT. Businesses with Belgian operations may find operational benefits in staying inside the Proximus family.
📚 Terms you can look up
Not sure what something on this page means? The pbx.lu glossary explains each in plain language.
🧩 Decision tree
Two honest recommendations based on business profile.
🔎 Other providers worth considering
If Tango is not quite the right fit, these are the logical next pages to check.
Same category · other Luxembourg operators
Different category · vendors and platforms
❓ Common questions
Can I keep my existing phone number if I switch from Tango?
Yes. Luxembourg number portability is regulated by the ILR (Institut Luxembourgeois de Régulation). You can transfer your Tango number to another provider. The process takes a few business days and must be initiated by the new provider.
Can I use Tango Fix4Bizz if I have a different internet provider?
No. Fix4Bizz requires a Tango internet connection. It will not function on another ISP's network. If you switch internet providers, you would need to switch your phone system as well.
Does Tango Fix4Bizz work for businesses with employees in Belgium, Germany, or France?
Partially. The Bizz2Go mobile app allows employees to use their business number while abroad. However, Fix4Bizz does not provide virtual numbers for Belgium, Germany, or France. If cross-border clients need to call a local number in their country, Fix4Bizz does not cover this.
What happens to my Yealink phones if I leave Tango?
Yealink phones are based on the SIP protocol, which is an industry standard. In many cases, Yealink phones can be reconfigured to work with a different Cloud PBX provider. A migration specialist can assess your specific models and confirm compatibility.
Is Tango a regulated operator in Luxembourg?
Yes. Tango SA is regulated by the ILR (Institut Luxembourgeois de Régulation) and must comply with Luxembourg telecom regulations, including number portability and emergency services rules.
Does Fix4Bizz include call recording?
No. Call recording is not part of Fix4Bizz. Businesses that need call recording for quality, training, or compliance reasons will need to look at a different Cloud PBX product.
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📍 Next steps
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