
1. Make sure your Huawei R207 Mobile WiFi router is atleast 1 % charged.( OR ) Connected to power suppyly
2. Just insert a non acceptable Network sim on your R207 router SIM card slot. (You have to use another network provider sim,
which is currently locked to).
3. After changing the another network providers sim on your Huawei WiFi / MiFi switch the device on. It will display “Invalid
SIM”...