I own iPhone 3gs and this is the best smartphone for me. But I have so crazy friends, and they are reading my SMS messages when I am into toilet, lol.
So, can someone write me how to set an alphanumeric passcode on iPhone 3gs??? Thanks.
By default, passcodes in iOS are only 4-digit numerical codes that aren’t as secure as passwords using upper and lower-case characters, special characters, and numbers.
If you want to make your iPhone, iPod touch, and iPad even more secure, it’s best to create an alphanumerical passcode.
Settings > General > Passcode Lock. Once there, ensure that the “Simple Passcode” option is set to OFF.