1、Does it take any networks carriers to use?
Yes, This cell phones unlocked K9 4G smartphone offers Dual SIM free unlocked 2G GSM, 3G WCDMA, 4G LTE-FDD TDD network for main carriers such as AT&T, T-mobile,Straight talk,metro pcs, Cricket wireless.
NOTED:DOES NOT support CDMA carriers, like Verizon,Sprint,US Cellular.etc. Dual standby (Depends on your carrier, please check it with your carrier) is more convenience for your daily usage.
2、How many SIM Slot?
Yes, this OUKITEL K9 Android phone has two sim slots. You can use two Nano sim card or one Nano sim card+ one TF card. Please kindly noted that.
3、Will it support WI-FI connection?
Yes,you can connect to WI-FI. Also this OUKITEL K9 cell phone qualified Bluetooth ,GPS+GLONASS,Sensors (Proximity, Light, G-sensor etc), OTG, FM..
4、What should I do if I can't connect to 4G?
Please try the troubleshooting below:
Input “ *#*#3646633#*#* --bandmode-SIM1/SIM2” to check if the frequency band of your phone is: FDD1/2/3/4/5/7/8/12/17/19/20 TDD40. If not,it means the phone you got was a wrong version.Send us pictures of the IMEI nubmer,we will assist you with the next steps.If the band is right,please try to set the APN and reboot the phone.If you don't know how to do it, please send us messages via your Amazon account,will show you how to set APN. Or you can consult you carrier to set it.
Network connect:
4G LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B17/B19/B20
TDD band : B40
3G WCDMA band: B1/B2/B4/B5/B8
2G GMS band:850/900/1800/1900