Jammers B39 User Manual - page 2
5. FAQ:
1). Q: Which version should I choose, European or American version?
A: Please check your cellphone frequency bands firstly for your country. http://www.worldtimezone.com/gsm.html
Then check the frequency band of B39 and choose the version that fits you.
Generally speaking, European version is suitable for European countries, Australia, Middle East, South East, African countries and Brazil.
Americal version is applicable for Canada, USA and Latin American countries (except Brazil).
2). Q: What to do if I do not want to jam some bands?
A: Here come two ways. Please turn off certain DIP switches or screw off certain SMA antennas.
3). Q: Why does some band not work?
A: Make sure to install the antennas by orders and put on the certain DIP switch.
4). Q: It blocks cellphone signals in short range.
A: If there is cellphone signal booster or Mobile signal tower, the blocking range will be reduced.
5). Q: Will the blocking range rise if I turn off other bands?
A: It will not increase its range. Because the output power of each band is fixed.
6). Q: How to prolong the working time for B39?
A: Please charge it for 4 hours. You can also buy extra battery bank GM4000.
5. Warranty & Returning Policy
The warranty of B39 is one year. Since you purchased from us, you will enjoy one year warranty.
Once you get your package, please check if the outer packing is original or in good condition. Then install and use it according to above
instructions. If it doesn’t work properly, please contact our sales team. If you want to return for repair, please contact our sales team.
Warranty will be invalid under below conditions:
·
It has more than 12 months since you ordered.
·
Open the case or change circuits without our formal authorization.
·
Other kinds of problems caused by wrong operations including using wrong power source.
6. Caution:
The preventer shall be used legally according to local laws. The user will be fully responsible for any illegal usage or any infringement of rights.