Check the batteries, change AA batteries to new ones, charge LIT/12 V battery pack.
o If possible, try a new, freshly formatted microSD card.
o Ensure the antenna is screwed in securely and is not damaged.
o Check if the camera is receiving a good signal on site.
o As a last resort, check that the SIM card is in place and inserted properly.
o Be sure to use a microSD card between 2 GB and 32 GB, class 10.
o CELL-LINK broken/faulty
o Plan limit reached.
o Make sure the schedule is OFF or set to the correct times.