Why didn't vivoy27 receive the verification SMS, and the SMS often didn't receive the call?

If the vivoy27 mobile phone terminal cannot receive SMS or verification code, there are the following reasons.

1. Please check whether the mailbox is full first. If it is full, please delete some information.

2. If it is still not received after deletion, you can change the machine or card to see if it is a hardware factor;

3. After eliminating the above reasons, try to see if it can be received in other places to see if it is the reason for the weak local signal.

If the vivoy27 mobile phone terminal cannot answer the phone, there are the following reasons:

1. Check whether the phone is set with call forwarding, flight mode, call barring, etc. It is recommended to cancel and try again.

2. Check whether the function or signal of the mobile phone is normal. It is recommended to change your mobile phone or location and try again.

Check;

3. Try restarting or changing your mobile phone to see if you can answer the phone;

Check whether the local network signal is normal. If there is a problem with network signal coverage, it will affect the reception of short messages and telephone calls. At this time, you can contact the local Unicom customer service for consultation.