
Battery
4/5
Shipping
4.1/5
Lens & Camera
3.9/5
Accessories
4/5
Packaging
4.5/5
Overall performance
3.6/5
Appearance
4.3/5
Reviewed 30/12/2022, United Kingdom.
Like brand new.great value. Won't need a new phone for ages.
CAT S31 16GB - Slate Grey - Unlocked - Dual-SIM
CAT S31 16GB - Slate Grey - Unlocked - Dual-SIM
Condition
Excellent
Purchased
20/12/2022
Reviewed 01/12/2021, United Kingdom.
Third time have used Back Market. Always been very pleased with their whole package.
CAT S31 16GB - Slate Grey - Unlocked - Dual-SIM
CAT S31 16GB - Slate Grey - Unlocked - Dual-SIM
Condition
Fair
Purchased
10/11/2021
Reviewed 28/11/2025, France.
CAT S31 16 Go - Gris Ardoise - Débloqué
CAT S31 16 Go - Gris Ardoise - Débloqué
Condition
Fair
Purchased
23/10/2025
Reviewed 06/11/2024, France.
Telephone in very poor condition - want to have it returned
Translated from French
CAT S31 16 Go - Gris Ardoise - Débloqué
CAT S31 16 Go - Gris Ardoise - Débloqué
Condition
Excellent
Purchased
19/10/2024
Reviewed 28/05/2023, France.
I am very satisfied with this purchase. Delivery times are always very good, and the product complies. I like the logic of the operating system on this product, that of a "boomer" no doubt... A little slower than my last purchase, a blackview. On the latter, there was a small dot on the screen right from the start. It degenerated into large bars... Not cool. With this one, the quality/price ratio is excellent.
Translated from French
CAT S31 16 Go - Gris Ardoise - Débloqué
CAT S31 16 Go - Gris Ardoise - Débloqué
Condition
Fair
Purchased
13/05/2023
Reviewed 26/12/2020, France.
Le produit était dans un état neuf. Rien a redire. J’ai du comme même le retourné car les caractéristiques wifi ne me convenait pas. Pour le reste impeccable. Le service client au top. Réponse rapide Démarche a suivre claire pour le retour du produit. Merci vraiment de la qualité de service rendu.
CAT S31 16 Go - Gris Ardoise - Débloqué
CAT S31 16 Go - Gris Ardoise - Débloqué
Condition
Excellent
Purchased
16/12/2020
Reviewed 12/01/2023, Portugal.
The phone was synchronised with the last user's account, so it had to be returned. I delivered it to a DHL collection point, duly labelled with the return barcode you sent me, but I still haven't received any confirmation that it has been delivered for repair. A doubly bad service! Let's see if it doesn't get any worse!
Translated from Portuguese
Caterpillar CAT S31 16 GB (Dual Sim) - Cinzento Ardósia - Desbloqueado
Caterpillar CAT S31 16 GB (Dual Sim) - Cinzento Ardósia - Desbloqueado
Condition
Fair
Purchased
27/12/2022
4,7Screen size (in)
720 x 1280Resolution
200 gWeight
NoCompatible with latest Update
BlackColour (official name)
2 GBMemory (GB)
2 megapixelsFront camera
TFTScreen type
UnlockedCarrier compatibility
The CAT S31 is a rugged smartphone designed for durability and functionality in challenging environments. Launched as a robust option for outdoor enthusiasts and professionals, this device combines solid performance with a tough exterior, making it ideal for construction sites and adventurous outings.
Key features:The CAT S31 is perfect for tradespeople, outdoor workers, or anyone requiring a smartphone that can withstand harsh conditions. Its rugged design and reliable performance make it a suitable choice for users who need a device that can handle drops, dust, and water exposure.
Pros & Cons:| Pros | Cons |
|---|---|
| Rugged design for durability in tough environments. | Limited processing power compared to newer models. |
| IP68 rating for water and dust resistance. | Lower resolution display may not appeal to media consumers. |
Choosing a refurbished CAT S31 allows you to benefit from a rugged smartphone while being eco-conscious. Each device from Back Market undergoes rigorous testing to ensure quality and reliability. Learn more about our quality standards.
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