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setracker device is offline

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Update time : 2020-03-18 14:38:43
setracker device is offline
1- SIM card is no signal, suggest go outdoor to locate
2- Check If SIM card support 2G - GPRS internet
3- Check If SIM card internet GPRS is canceled
4- Check If SIM card is in debts(ran out of money)
5- Check If APN setting is correct