What happened when the old machine couldn't receive the SMS verification code?

With the popularity of smart phones, aging machines have gradually withdrawn from the market. However, there are still some elderly people who often encounter a problem when using the pension machine, that is, they can't receive the SMS verification code. Let's discuss the reason why the old mobile phone can't receive the SMS verification code.

Reason one: Old mobile phones don't support international short messages.

The short message function of elderly mobile phones is relatively simple. Many elderly mobile phones do not support international SMS, and many websites and apps send SMS verification codes through international SMS. So the old machine can't receive these SMS verification codes.

Reason 2: The signal of the old machine is not good.

The signal receiving ability of the old machine is weak. If the signal in the place where the old machine is located is not good, the old machine will not receive the SMS verification code. At this time, you can try to receive the SMS verification code again in the place with good signal.

Reason 3: The storage space of the old machine is insufficient.

The storage space of the old machine is relatively small. If the storage space of the old machine is insufficient, it will cause the old machine to be unable to receive SMS verification code. At this point, you can try to delete some unnecessary files or clear the cache to free up storage space.

There are many reasons why the old mobile phone can't receive SMS verification code, but we can solve the problem by investigating the above reasons.