Update for 06-05-22 17:15

tech/pinephone.wiki

@@ -15,7 +15,7 @@ crossdev and the needed toolchain (See [[cross_toolchain]])
 emerge -av git ninja crossdev
 crossdev --target arm-none-eabi
   }}}
-  
+
 === GPU Support ===
 
 The pinephone pro uses a Mali T860 quadcore CPU, and therefore is run using the
@@ -25,7 +25,7 @@ lima drivers. In the phones make.conf, be sure to add
 #/etc/portage/make.conf (chroot in phone)
 VIDEO_CARDS="lima"
   }}}
-  
+
 In your global use, be sure to add
 
 {{{
@@ -35,3 +35,18 @@ USE="gles gles2-only"
 
 This ensures that we will only compile programs using OpenGL ES, or OpenGL for
 embedded systems.
+
+== Troubleshooting ==
+
+=== Phone not booting due to fully drained battery ===
+
+Battery voltage will be ~2.4V when dead in my experience. To get the phone to
+boot
+
+1) Remove SDcard
+2) Remove battery, serial, and usb cables
+3) Reinstert the battery
+4) Hold down the RESET button
+5) While holding the button down, connect the USB port to a computer
+6) let go of the button
+7) in `lsusb` you should see `2207:330c Rockship electrions`