Joke Collection Website - Public benefit messages - IPhone4 has changed its Unicom card, why can't I send a text message?

IPhone4 has changed its Unicom card, why can't I send a text message?

Hello, according to your description, it is generally possible that the number of the SMS center in your mobile phone is wrong. I suggest you check it out. If your SMS center number is wrong, you can reset the SMS center number. According to the number of SMS centers in different regions, we suggest you call the local customer service hotline 100 10.