★★★★★ 4.6/5 from 175+ customer reviews
Hard case for Fairphone 4
Hard case for Fairphone 4Precise fit. Functional. For Fairphone 4.
- Biodegradability tested
- Precision-fit & shock-absorbing
- 6-month Biowaves warranty
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Over 8,000 satisfied customers since 2020
Technical details
materials
materials
Made from recycled and recyclable PP (polypropylene) and wheat straw. Fully biodegradable. Free from BPA and harmful plasticizers.
Dimensions &mWeight
Dimensions &mWeight
7,7 cm x 16,4 cm x 1,4 cm, 29g
disposal
disposal
Our hard case is made from a combination of recycled and recyclable polypropylene (PP) and natural wheat straw fibers.
At the end of its lifespan, the case can be disposed of with regular household waste.
Under suitable conditions, the material decomposes without leaving harmful residues or producing permanent microplastics.
Since there are currently no comprehensive take-back systems for bioplastics in Europe, we recommend this disposal method.

In stock. Arrives in 5-10 days.
Effective protection
Shockproof & durable : Reliably protects your Fairphone 4 from scratches, impacts and daily wear and tear.
Screen protector & camera protector : Raised edge around display and camera for maximum security.
Secure fit : Precise fit without wobbling or gaps – fits like a glove.
Flat back : No unpleasant "wobbling" on smooth surfaces.
6-month warranty
Biowaves offers a 6-month warranty against material and manufacturing defects.
Even in the event of a fall, we will consider replacing your case in a fair and sustainable manner.
Material & biodegradability
Biodegradability tested: The material of our hard cases has been tested for biodegradability by Intertek under defined anaerobic conditions according to ASTM D5511-18.
Material with recycled PP and wheat straw: For our hard cases, we use PP with a recycled PP content and natural wheat straw fibers.
Certified production standards: Our manufacturer operates according to BSCI- and ISO-9001-certified standards.
First-class quality & pleasant feel
Our hard case for the Fairphone 4 impresses with high-quality, biodegradable, and recycled materials that feel natural and pleasant.
Its smooth, matte surface with a fine texture feels warm and soft in your hand – without any chemical odor or artificial additives.
Each case is unique due to the natural pigmentation of the material – with a subtle, individual grain.
Choose sustainable quality – Biowaves for your Fairphone.
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Who we are
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FAQs
Will the case still fit if I use a screen protector or camera lens protector?
Yes, our case is designed to be compatible with most common screen and camera protectors. The raised edges provide additional protection without affecting the fit.
Does the casing stretch out over time or does it remain stable?
Our hard cases are not made of soft silicone, but of a sturdy PP material with wheat straw content and slight elasticity. This ensures the fit remains permanently precise – without stretching or wobbling.
What exactly is the casing made of?
The SmartShell consists of polypropylene (PP) with a recycled PP content, natural wheat straw fibers, and the additive SK-BIO01.
You can find more information about material, testing, and disposal on our page Material & biodegradability.
Is the casing truly biodegradable? How does that work?
The material of our hard cases has been tested for biodegradability by Intertek under defined anaerobic conditions according to ASTM D5511-18.
You can find more about the test result and the correct classification on our page Material & biodegradability.
💚 More questions about shipping, warranty or returns?
Check out our FAQ page – there you'll find all the information about ordering, delivery and service.