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Data disconnects getting disconnected regularly and connects by itself sometimes or connects if data is disabled and then reenabled. Sometimes putting phone in offline and reverting back only solves the priblem. Fed up with this issue.
See if Extended standby mode is enabled under Settings -> Power management and if so, disable it. Also check if you have enabled any events in Smart Connect to enable/disable data traffic.
If that doesn't help, try the phone with another SIM-card and see if the problem remains.