We tried FairPhone3!
This phone is the product of the only mobile manufacturer in the world that strives to be a responsible market player in every detail from sourcing raw materials to manufacturing.
Our OpenBioMaps-based field data collection application works well with the FairPhone3. Although the device is not waterproof, its factory silicone case protects it well from damage, it can be used in the field with some care. When collecting data in the field, in addition to durability, camera quality, mobile signal strength, battery capacity and the quality of the GPS receiver are also important. This device has an excellent camera for fieldwork, acceptable battery capacity (you can work with one charge for a day), good mobile signal reception and good GPS quality. It showed even more stable performance compared to a similarly priced non-eco-friendly device, but its GPS and mobile reception capabilities were somewhat weaker. Overall, it is a field device that we can recommend to those who care what kind of mobile device they are using.