Continuing the discussion from [RESOLVED] Cant connect my core, flashing green, cyan, white:
Using the above as a guide as I was looking for a solution, using Tinker app on android while on hot-spot wifi, core connects to hotspot (it beeps). Logging into hotspot via ipad safari shows spark connected with hotspot local ip, but stays on blinking cyan cycle - Step 5. Tried adding port forward for 5683 with no change. ZTE MF96 Sonic 2.0 LTE has limited configuration with no DMZ or other options. Any help appreciated. Hopefully not - to get another hotspot!