Q. Can I call from the tablet? Oh no. While this is not possible. The modem only supports data transfer. Can be used
ViberQ. Can I send / receive SMS? A. On some firmwares you can.
Q. How to check balance? O. We use
Anybalanceor a similar program. Check through the provider's office, you need an Internet connection.
Q. Does Skype work? A. On the latest firmware works.
Q. Does OTG work? A. Works. External HDD requires additional power.
B. Bluetooth is not working well (sound, file transfer) A. WiFi and Bluetooth in the same chip and on the same antenna. Turn off WiFi for Bluetooth to work properly.
O. APK files in android via Bluetooth are not transferred.
B. The tablet does not turn on A. Perhaps the battery is in deep discharge. Connect the charging, after half an hour, try to turn it on.
A. Perhaps the tablet is "frozen". Next to the backlight diode of the rear camera there is a "Reset" button. Press into the hole with a paper clip (5-10 sec). Try to turn it on.
Q. What does the reset button do? A. Disconnects the battery.
Q. How to connect a 3G modem? A. Answer
here. In the spoiler 3G modems.
Q. How does GPS work? A. Most work poorly. Signal sensitivity is weak. While the cause can not be localized.
AT.
Does the tablet see GLONASS satellites? A. Yes, he sees. But mostly uses GPS.
Q. Can I charge my tablet from USB? Oh no. Charging is possible only from a special connector.
Q. If I use a USB to DC 2.5 mm cable. Can I charge it from the computer? A. Theoretically in the off state will be. But charging will last forever. USB computer gives a small current.
Q. Why can not I copy a file larger than 4GB to the internal memory of the tablet? A lot of free space. A. File system limitation. Internal memory formatted in FAT32.
Q. Does the tablet see memory cards in 64GB. Oh yeah.
V. Do not see / falls off WiFi A. First of all, check the operation of the router on another device.
A. The tablet does not support the outdated WEP authorization algorithm. Use WPA2 / AES
A. On the router, forcibly set the WiFi channel to no higher than 11. Who is interested in comparing the FCC and ETSI standards.
A. On the router, set the channel width to 20 MHz.
A. If the 802.11n access point and the tablet are in direct line of sight and cannot establish a connection or a very weak / unstable signal level is detected, we recommend lowering the transmitter power at the access point or unscrewing the antennas.
A. Perhaps the "iron" problem (not solder, short circuit, defective antenna cable). see below "Who changed the antennas?"
Q. How to enable multi-user mode? A. The answer to the FAQ threads firmware
Q. I have a 3G version, there is no mobile internet through sim card. A. The PIN code request occurs when the tablet is turned on or when the flight mode is turned off
B. Clicks when power on / restart. How dangerous is it? A. The autofocus clicks when the camera is initialized. There is nothing scary.
B. The camera does not work. Error starting gallery. O. The camera loop fell off. Disassemble the tablet. There is double sided tape on the bottom of the camera, but it is not glued. To glue. Re-insert loop
B. How to configure Miracast? A. The answer is
by thispost
B. Large battery consumption in a dream O. Problem solving
hereor
here.
Q. Who changed the antennas? ABOUT.
Option number 1,
Option number 2,
Option number 3,
Option number 4,
Option number 5B. Black screen when viewing full-screen flash video. A. Possible solution
here 
M9pro_user_manual_RU.pdf
