FAQ:

1. Does the internet work over the GSM network?

Configure settings for the appropriate operator. Below the information file for each operator
Settings for the internet

2. Can not send and receive MMS?
Configure settings for the appropriate operator. Below the information file for each operator
Settings for MMS

3. The battery runs briefly. Why?
Common causes of short battery life:
- Calibrate your phone and battery. Solution - battery formation.
- operation of various unused modules. Solution - Disable unused modules like WiFi, GPS, etc.
- unnecessary programs running in the background. Solution - turn off unnecessary programs.

4. How does "DualSIM" work on RUGGED PHONES phones?
Please open the file DualSIM_Standby.pdf

5. Problem with proximity sensor?
Information on how to calibrate proximity sensor - calibration

6.  If not everything is OK with system, let's restore the software and get it back. Restore factory settings