Archived product

Scarlet

Duo Boost

Name: Duo Boost
Brand: Scarlet
SKU: 85f19646-456a-4302-98cf-a17659a40c88
Price: 52 EUR

Download

300 Mbps

Data

10 GBUse in BE and EU

Calls

300 min.

€52 /mo

Activation: €29
Installation: €50

2-pack: internet with phone plan

Archived product

Scarlet Duo Boost is no longer available for new customers. If you are still using this product, we've made it super easy for you to find alternatives for Scarlet Duo Boost, both from Scarlet itself and from its competitors. The information on this page has not been maintained or updated since june 2025. This page is purely for comparison with more current offers and as a historical reference overview.

Evert E. — Telecom consultant

Pros and Cons

According to our expert

In this review, we explain in clear language where Scarlet scores strongly and what points of interest you should take into account before choosing this all-in-one pack Scarlet Duo Boost.

Pros

+ Well suited for remote workers and larger families with multiple connected devices.
+ Enables simultaneous 4K streaming across multiple devices without significant slowdown.
+ Designed for smooth multiplayer gaming experiences across multiple devices.
+ Well suited for remote work, video conferencing, and regular online meetings.
+ Recommended for basic users with standard calling and data needs.
+ Includes sufficient mobile data for everyday use such as browsing and messaging.
+ Includes enough call minutes for regular day-to-day usage.
+ Allows you to transfer your existing phone number free of charge when switching providers.

Contras

− Less suitable for live streaming due to limited upload performance.
− Supports 4G connectivity, but does not yet offer access to 5G speeds.

Product score

2,8 / 5

Download: 75%
Upload: 50%
Data bundle: 50%
Call bundle: 63%
Network: 25%

Specifications

These were the specifications

Last update	June 2025
Broadband
Download	300 Mbps
Upload	30 Mbps
Volume	Unlimited
Connection	Fiber
Phone plan
Number of SIM cards	1 SIM card
Data	10 GBUse in BE and EU
Data outside bundle	Free
Calls	300 min.
Calling outside the bundle	€1.60 /min
Texts	Unlimited
SMS outside the bundle	Free
4G/5G network	Proximus 4G
5G speed	-
Monthly fee	€52 /mo
Activation	€29 one-off
Installation	€50 one-off
Contract duration	Indefinite
Notice period	Indefinite
Available in	Belgium
Target audience	Consumer

About Scarlet

Who is Scarlet?

Scarlet is a Belgian telecom provider offering internet, mobile services, digital TV, fixed telephony and bundled telecom packs. The brand is part of Proximus and mainly targets people who want straightforward telecom services without many extra options. Scarlet uses the Proximus network for much of its offer, which gives it broad coverage for fixed and mobile services. Scarlet is suited to families, single users and budget-conscious customers who want to combine essential home and mobile telecom services with one provider.

Comparison

Scarlet Duo Boost vs competitors: Features and Pricing Compared

Forewarned is forearmed. Scarlet Duo Boost serves as the benchmark product in this comparison. In which areas does Scarlet Duo Boost outperform other all-in-one packs, and in which not so much?

What are the best alternatives to Scarlet Duo Boost?
Do you prefer to stick with Scarlet?

	Featured product


	Scarlet Duo Boost	Base Unlimited internet + BASE 15 mobile	Proximus Flex+: Mega Fibre internet + Mobile Flex+ Easy	FASTFiber Fiber 500 + Mobile 15 GB + 400
Product score ⓘ	55%	68%	77%	66%
Download	75%	75%	93%	93%
Upload	50%	50%	100%	80%
Data bundle	50%	50%	56%	50%
Call bundle	63%	100%	100%	63%
Network	25%	75%	75%	75%
Show less details ⊟ Show more details ⊞
Last update	June 2025
Broadband
Download	300 Mbps	200 Mbps	500 Mbps	500 Mbps
Upload	30 Mbps	20 Mbps	500 Mbps	100 Mbps
Volume	Unlimited	Unlimited	Unlimited	Unlimited
Connection	Fiber	Cable	Fiber	Fiber
Phone plan
Number of SIM cards	1 SIM card	1 SIM card	1 SIM card	1 SIM card
Data	10 GBUse in BE and EU	15 GBUse in BE and EU	20 GBUse in BE and EU	15 GBUse in BE and EU
Data outside bundle	Free	Free	-	€0.01 /MB
Calls	300 min.	Unlimited	Unlimited	400 min.
Calling outside the bundle	€1.60 /min	Free	-	€0.10 /min
Texts	Unlimited	Unlimited	Unlimited	400 texts
SMS outside the bundle	Free	Free	-	Free
4G/5G network	Proximus 4G	Telenet 4G & 5G	Proximus 4G & 5G	Telenet 4G & 5G
5G speed	-	150 Mbps	200 Mbps	1 Gbps
Monthly fee	€52 /mo	€50.50 /mo instead of €55 (Forever)	€54.99 /mo after 6 months €79.99	€55.95 /mo
Activation	€29 one-off	Free instead of €30	Free	Free instead of €55
Installation	€50 one-off	Free instead of €59	Free instead of €79	-
Contract duration	Indefinite	Indefinite	Indefinite	Indefinite
Notice period	Indefinite	Indefinite	Indefinite	Indefinite
Available in	Belgium	Belgium	Belgium	Belgium
Target audience	Consumer	Consumer	Consumer	Consumer
Cashback	-	€25 cashback	€40 cashback	-
Promotions	-	Free activation + Free installation + €8.50 /mo discount on monthly fee for the entire duration of the contract Free activation + Free installation €4.50 /mo discount on monthly fee for the entire duration of the contract	Free installation + €25 /mo discount on monthly fee for 6 months	Free activation
Conditions	-	Condition: become a new BASE customer for mobile and internet. “For life” here means for as long as you remain a BASE customer for mobile and internet on the same bill. Become a new BASE internet customer. Get 10% off: provided you are already a BASE mobile customer or sign up for a BASE mobile plan as well. You can add a mobile plan to your order and keep your current mobile number. "Lifetime" here means for as long as you remain a BASE customer for internet and mobile on the same bill. Condition: become a new BASE mobile customer.	Conditions: become a new Proximus internet customer. If fibre is not yet available in your street, you will get Flex+ Go with an internet speed of 100 Mbps and pay €7 less per month. As soon as fibre becomes available in your street, Proximus will switch you to fibre free of charge.
Pros and Cons vs. Scarlet Duo Boost Evert E. — Telecom consultant		Summary + Cheaper subscription (Promotion) − Lower internet download speed + Larger data bundle + Larger call bundle	Summary − Costlier subscription + Much faster download speed + Better suited for home-office and gaming + Larger data bundle + Larger call bundle	Summary − Costlier subscription + Much faster download speed + Better suited for home-office and gaming + Larger data bundle + Similar call bundle
		More info →	More info →	More info →

Base Unlimited internet + BASE 15 mobile Promotion

200 Mbps
15 GB
Unlimited
€25

€50.50 /mo

200 Mbps
15 GB
Unlimited

Proximus Flex+: Mega Fibre internet + Mobile Flex+ Easy Promotion

500 Mbps
20 GB
Unlimited
€40

€54.99 /mo

500 Mbps
20 GB
Unlimited

FASTFiber Fiber 500 + Mobile 15 GB + 400 Promotion

500 Mbps
15 GB
400 min.

€55.95 /mo

500 Mbps
15 GB
400 min.

	Featured product


	Scarlet Duo Boost	Scarlet Duo pack: Loco internet + Berry mobile plan + Fiber Boost option	Scarlet Duo Pack: Loco internet + Cherry mobile subscription + Fiber Boost option	Scarlet Duo pack: Loco internet + Hot mobile subscription + Fiber Boost option
Product score ⓘ	55%	55%	61%	74%
Download	75%	75%	75%	75%
Upload	50%	50%	50%	50%
Data bundle	50%	50%	63%	75%
Call bundle	63%	63%	63%	100%
Network	25%	25%	25%	25%
Show less details ⊟ Show more details ⊞
Last update	June 2025
Broadband
Download	300 Mbps	300 Mbps	300 Mbps	300 Mbps
Upload	30 Mbps	30 Mbps	30 Mbps	30 Mbps
Volume	Unlimited	Unlimited	Unlimited	Unlimited
Connection	Fiber	Fiber	Fiber	Fiber
Phone plan
Number of SIM cards	1 SIM card	1 SIM card	1 SIM card	1 SIM card
Data	10 GBUse in BE and EU	15 GBUse in BE and EU	35 GBUse in BE and EU	65 GBUse in BE and EU
Data outside bundle	Free	Free	Free	Free
Calls	300 min.	300 min.	1000 min.	Unlimited
Calling outside the bundle	€1.60 /min	€1.60 /min	€1.60 /min	Free
Texts	Unlimited	Unlimited	Unlimited	Unlimited
SMS outside the bundle	Free	Free	Free	Free
4G/5G network	Proximus 4G	Proximus 4G	Proximus 4G	Proximus 4G
5G speed	-	-	-	-
Monthly fee	€52 /mo	€54 /mo	€57 /mo	€62 /mo
Activation	€29 one-off	€29 one-off	€29 one-off	€29 one-off
Installation	€50 one-off	€79 one-off	€79 one-off	€79 one-off
Contract duration	Indefinite	Indefinite	Indefinite	Indefinite
Notice period	Indefinite	Indefinite	Indefinite	Indefinite
Available in	Belgium	Belgium	Belgium	Belgium
Target audience	Consumer	Consumer	Consumer	Consumer
Cashback	-	€20 cashback	€20 cashback	€25 cashback
Pros and Cons vs. Scarlet Duo Boost Evert E. — Telecom consultant		Summary − Costlier subscription + Similar download speed + Larger data bundle + Similar call bundle	Summary − Costlier subscription + Similar download speed + Larger data bundle + Larger call bundle	Summary − Costlier subscription + Similar download speed + Larger data bundle + Larger call bundle
		More info →	More info →	More info →

Scarlet Duo pack: Loco internet + Berry mobile plan + Fiber Boost option

300 Mbps
15 GB
300 min.
€20

€54 /mo

300 Mbps
15 GB
300 min.

Scarlet Duo Pack: Loco internet + Cherry mobile subscription + Fiber Boost option

300 Mbps
35 GB
1000 min.
€20

€57 /mo

300 Mbps
35 GB
1000 min.

Scarlet Duo pack: Loco internet + Hot mobile subscription + Fiber Boost option

300 Mbps
65 GB
Unlimited
€25

€62 /mo

300 Mbps
65 GB
Unlimited

Past promotions

What promotions have you missed?

Every promotion has an end date. That’s why we keep a historical record of expired discounts and promotions on Scarlet Duo Boost. This gives you a better understanding of how prices, discounts and promotions have changed over time.

Show past promotions Hide past promotions

This promotion ran from 1 January 2026 to 2 June 2026

Free activation

Free installation (depending on the line, by yourself or a technician) on Fiber

This promotion ran from 1 January 2026 to 27 April 2026

Free activation

Free installation (depending on the line, by yourself or a technician) on Fiber

This promotion ran from 1 December 2025 to 4 January 2026

Free installation (depending on the line, by yourself or a technician) on Fiber

This promotion ran from 11 August 2025 to 16 November 2025

Free activation

Free installation (depending on the line, by yourself or a technician) on Fiber

This promotion ran from 2 May 2025 to 11 August 2025

Free installation (depending on the line, by yourself or a technician) on Fiber

This promotion ran from 2 May 2025 to 18 May 2025

Free installation (€-50), paid activation (€29) on Fiber

This promotion ran from 1 January 2025 to 1 May 2025

Free activation and installation (€-79) on Fiber

This promotion ran from 15 November 2024 to 1 January 2025

Free installation (€-50), paid activation (€29) on Fiber

This promotion ran from 31 July 2024 to 17 November 2024

Free activation and installation (€-79) on Fiber

This promotion ran from 1 August 2024 to 4 September 2024

Free installation & activation

This promotion ran from 31 July 2024 to 4 September 2024

Free activation and installation (€-79) on Fiber

This promotion ran from 1 July 2024 to 31 July 2024

Free installation

This promotion ran from 15 April 2024 to 30 June 2024

Free installation and activation (-79 €)

We go back up to 2 years

We have limited this overview to promotions from the past two years. Are you looking for information on older promotions? Contact us, and we will do our best to dive deep into our archives of the past 10 years. This information is purely for comparison with more current offers and as a historical reference overview. No rights can be derived from this.

Evert E. — Telecom consultant

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