N70 A few questions about texting, please answer them in detail when you are free. Thank you.

1. This is uncertain. If it is sent from mobile to mobile, the other party will receive a delivery report after the network is normal. However, if it is outgoing, that is, it is sent to Unicom by mobile, as long as the mobile server recognizes your information, you will receive a report. At this time, the other party may not receive your message.

2. SMS records are kept in the mobile company for one month, so the storage time of SMS records should not exceed one month, and the longest I received is probably less than one month.

3. The service numbers of different cards are different. Enter SMS-Left-click Options-Settings-SMS-Information Center. It's in there.

Note: The number format of SMS service center is fixed, which is +86 13800ABC500. The number of SMS service centers in different regions is different only from that of Agricultural Bank of China. ABC refers to the long-distance area code of your mobile phone. If the long-distance area code is less than three digits, add "0" to the three digits; If the long-distance area code exceeds three digits, take the last three digits.

In this case, it should be that he did not receive the MMS. The reason is generally that the other party has not opened GPRS or the mobile phone does not support it. Mobile phone photo album is a service of Monternet, and it is charged. Be careful when you go in.