ANDROID DEVICE:

Minimum configuration:

Android 8 and newer.
Supporting Google Play and Google Play Services (some Huawei and unbranded devices are not supported);
SIM card support with mobile phone number and 3G connectivity or better;
RAM at least 1GB;
Camera: back camera with resolution at least 2MP;
NFC reader;

Recommended configuration (for the best experience):

Android 11 and newer.
Supporting Google Play and Google Play Services (some Huawei and unbranded devices are not supported it);
SIM card support with mobile phone number and 4G connectivity or better;
RAM at least 2GB;
Storage at least 32GB with at least 5GB of free storage;
Camera: back camera with wide lens and resolution at least 4MP and auto-focus with LED diode for flash;
Battery case is recommended in case battery capacity is less than 3500mAh;
Dust and water protection (IP64, IP68) is recommended if the phone is used outside; (phone cover can protect device in case it falls on the ground);
Accelerometer and compass capability;
NFC reader;

Example of recommended Android mobile devices:

Example of recommended Android tablets:

Not recommended Android manufacturers:

Huawei, Xiaomi, Realme, Honor, OnePlus, ZTE, OPPO, Vivo, Lenovo (all due to security risk or bad user experience)

APPLE DEVICE:

iPhone and iPad devices with SIM card and iOS 15, iPad OS 15 and newer.

Example of recommended devices:

How can I manage devices?

Devices with Mobile App