Cydia not updating properly

The most ironclad requirement for being able to use Find My i Phone is that both i Cloud and Find My i Phone have to be enabled on the device you need to locate before it's lost or stolen.If these services aren't on, you won't be able to use the Find My i Phone website or app, since the service won't know what device to look for or how to contact it.Find My i Phone is a terrific tool for locating lost or stolen i Phones and i Pod touches.

Without it, your phone can't connect to 3G or 4G and thus can't communicate with Find My i Phone.If the person who has your i Phone removes the SIM, your phone will essentially vanish from the internet (unless it connects to Wi-Fi).On the plus side, the phone needs a SIM to use cellular phone networks, so even if the thief puts a different SIM card in it, the phone will be visible to Find My i Phone next time it comes online.Apple's servers expect devices connecting to them to have the correct date, and if they don't, problems ensue.