MQTT connection broken after specific time

sim800l
sim800

#1

Hey,

I am working on ESP12 + SIM800L & ESP12 + SIM800C, my GSM MQTT connection hangs up & GSM goto sleep mode after specific time.

After doing multiple test case i found that SIM800L hangs up after every 4 hour & SIM800C hangs up after 12 hour evey time.

Can we achieve 24 hour mqtt connection without disconnect ?