Update FAQ w/ Question About SIM Cards Outside US

doc/faq.md

@@ -4,7 +4,12 @@
 
 **It Depends**. Operation of Rayhunter does require the insertion of a SIM card into the device, but that sim card does not have to be actively registered with a service plan. If you want to use the device as a hotspot in addition to a research device, or get [notifications](./configuration.md), an active plan would of course be necessary.
 
+### If I am located outside of the United States, should I use the SIM card that came with my device?
+
+We recommend using a SIM card from a carrier in whichever country you are located in.
+
 ### How can I test that my device is working?
+
 You can enable the `Test Heuristic` under `Analyzer Heuristic Settings` in the config section on your web dashboard. This will cause an alert to trigger every time your device sees a cell tower, you might need to reboot your device or move around a bit to get this one to trigger, but it will be very noisy once it does. People have also tested it by building IMSI catchers at home, but we don't recommend that, since it violates FCC regulations and will probably upset your neighbors.
 
 <a name="red"></a>
@@ -17,7 +22,6 @@ If you've received a Rayhunter warning and would like to help us with our resear
 
 Please note that this file may contain sensitive information such as your IMSI and the unique IDs of cell towers you were near which could be used to ascertain your location at the time.
 
-
 ### Should I get a locked or unlocked orbic device? What is the difference?
 
 If you want to use a non-Verizon SIM card you will probably need an unlocked device. But it's not clear which devices are locked nor how to unlock them, we welcome any experimentation and information regarding the use of unlocked devices. So far most verizon branded orbic devices we have encountered are actually unlocked.
@@ -36,7 +40,6 @@ relevant as it does not use or touch USB.
 
 [First obtain a shell](./orbic.md#shell), then:
 
-
 ```sh
 # inside of Orbic's shell:
 echo 9 > /usrdata/mode.cfg
@@ -55,7 +58,6 @@ reboot
 
 See `/data/usb/boot_hsusb_composition` for a list of USB modes and Android USB gadget settings.
 
-
 ### How do I connect my device to an existing WiFi network?
 
 The Orbic, Moxee, UZ801, and TMOHS1 can connect to a nearby WiFi network while still running their own hotspot. This gives the device internet access for ntfy notifications and lets you reach the web UI from your home network. See [WiFi Client Mode](./configuration.md#wifi-client-mode) in the configuration guide for setup instructions.