Important criteria:

  1. Long Life Battery. Depending on the time in the field, it should have a capacity of at least 5000 mAh
  2. Robustness. Dust and water prove (IP68)
  3. GPS accuracy. More is better: GNSS (USA), GLONASS (Russia), Galileo (EU), BeiDou (China), QZSS (Japan), IRNSS (India)
  4. Supported frequency bands: Match regional availabilities (type of GSM, WCDMA, LTE, WiFi, Bluetooth)  
  5. Price. A good phone costs costs about 300 USD. 


Also pay attention to the camera, storage capacity (16Gb), and screen contrast (reading in the bright sun).


Known favourites (February 21)


Always check the latest versions of these phones