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Issue: SIM Error

Related Pictures:

cell low signal

Description:

At H685/H820/H700/H720 router, the "Status Page" indicates "*** SIM Error ***". Sometimes the Signal will indicates correct signal value, but cannot dialup and Sim Status shows "*** SIM Error ***".

Main Cause and Solution:

Item Cause Solution
1 SIM card is not touched well with sim slot

try to take out the sim card, re-insert it;

try to scratch the sim card slot touch pin to clear the dirty;

2 SIM card is not compatible to your local network try to change another sim card
3 SIM card is not compatible to the radio module in the router try to change another sim card. Or contact sales to order other radio module if possible.