Huawei's mobile phone call forwarding network is abnormal and cannot be set.

1. Signal problem: Bad signal will lead to abnormal transmission. You can try moving to a place with a good signal and try again.

2. Card slot or SIM card is damaged: You can plug the card into another mobile phone to see if it can be used. If it doesn't work, you need to go to the business hall to replace the card slot.

3. Reset call forwarding: enter the setting interface of the mobile phone and reset call forwarding according to the correct steps. Make sure that the transfer number entered is correct and select the appropriate transfer conditions.

4. Operator does not support it: Some SIM cards or operators may not support the call forwarding function. In this case, please contact the operator to confirm whether this function is supported and learn how to set it correctly.

5. Introduction to Call Forwarding: Call Forwarding is a network function. If the mobile phone can't answer or doesn't want to answer the phone, you can transfer the incoming call to another phone number, including: unconditionally transferring all incoming calls to a pre-entered transfer phone number regardless of the state of the mobile phone. Conditional call forwarding, when the called mobile phone is busy and cannot be connected, the call is forwarded to a pre-entered phone number. Transfer classification can transfer calls to different numbers according to the call type and phone status at that time.