I just bought an Apple mobile phone, and I accidentally found a text message a few months ago. What happened? Apple's 5s 16g memory is only 12.

1. Look at your Apple account. In Settings -iCloud, if it's your or your family's number, it's normal. 16G only 12G is normal, and the other 4G is occupied by the system. If it's not your or your family's number, then go to the shopkeeper to change planes, or you won't need to take photos to find him when you restore the factory settings in the future.

2. Check the activation time of Apple, Baidu Apple activation time query, in Settings-General-About mobile phone, just look at the serial number input, but the new mobile phone was activated on the day you bought it.