2. iPhone 4 (GSM) 16GB Black serial number: 61121UBUA4S Device Name: iPhone 4 Capacity: 16GB Color: Black Type: iPhone3, Generation 1 number: n90ap Type number: MC318/MC603/MC608 Activation Status: Activated Phone Support: Expired Hardware warranty: expired Production Date: May 28, 2011 - June 3, 2011 Your phone is a refurbished machine.
3, on the iPhone, turn on Settings - Sound (or sound and touch) - Phone ringtone or SMS ringtone "in the columnIn the table, you can see the custom ringtone we have just imported, and choose to change the ringtone, as shown in the following figure. The above is the iPhone custom ringtone and tutorial on the computer, the operation is very simple, basically download, and then import the iPhone ringtone library with one click.
4, Device name: iPhone 4 Capacity: 16GB Color: Black type: iPhone3, generation 1 number: n90ap type number: MC318/MC603/MC608 Activation status: activated phone Support: expired hardware warranty