Verizon Iphone 5c Does The Cellular Data Usage Indicate Only My Usage Or My Familys As Well

What does 'Erase all content and settings' on an iPhone do exactly?

While most of the other answers already explain the results rather effectively, I wanted to add a bit of technical info to the mix….Technically, what the Erase all content and settings option does under the hood is destroy the encryption keys that are used to encrypt ALL data stored on the iPhone, iPad, or iPod touch. The data remains on the device, but it’s rendered completely inaccessible as it’s encrypted and the keys used to encrypt that data have been permanently and securely erased.From page 10 of Apple’s iOS Security Guide:[1]The “Erase all content and settings” option in Settings obliterates all the keys in Effaceable Storage, rendering all user data on the device cryptographically inaccessible. Therefore, it’s an ideal way to be sure all personal information is removed from a device before giving it to somebody else or returning it for service. Important: Do not use the “Erase all content and settings” option until the device has been backed up, as there is no way to recover the erased data.This is actually an important distinction, as it explains how an iOS device can be securely erased in a matter of seconds. Anybody who has ever tried to “secure wipe” a hard drive knows that it can take quite a bit of time for your computer to go through the entire hard drive and write over the data several times, block by block. In fact, prior to iOS 3.0 and the iPhone 3GS — the first iPhone that included hardware encryption — the Erase all content and settings option used to take a couple of hours to go through your entire flash storage and erase the data block by block.Hardware encryption was introduced to make “remote wipe” more effective as a realistic security option. After all, if somebody was really trying to get access to your data, a remote wipe that takes a couple of hours to securely erase everything on your device would not truly be a secure option — an investigator or identity thief could disassemble the device, cut power, and remove the flash storage chips before the processor could erase all of the data, and then use forensic tools to read the data from the flash storage directly.Footnotes[1] https://www.apple.com/business/d...

How can I switch my phone from straight talk to Verizon?

As far as the phone goes, that's easy. All Verizon phones are compatible with Straight Talk, so you will just need to replace the Verizon SIM card in the phone with a Straight Talk SIM card. This is assuming you already own your phone. If you are still making payments on it, you will probably need to pay it off before you will be able to use it on Straight Talk. Straight Talk should provide you with this SIM or you can buy one online or at Wal-Mart.If you are looking to keep your phone number you will need to port it over from Verizon and should be able to do this either through Straight Talk's 800 number or their website. In order to port your number you will need your Verizon account number AND PIN number. If you do not have BOTH, you will not be able to use your number. Your Verizon number will also need to be active and in good standing at the time of the port request. If the number is suspended or disconnected, the port request will be denied by Verizon.

Can I still track my iPhone even if the SIM card is taken out?

If the phone is "Offline" it usually either means that either the phone is off, the battery is dead, it's in airplane mode OR it isn't connected to wifi or using cellular data. You should be able to track it if the person starts using your data or a wifi network. If they totally reset it though, you might not be able to track it.EDIT: BUT here's good news! According to this support article on Apple's website, Activation Lock is turned on by default when you turn on Find My iPhone (which you are obviously using). Activation Lock asks you for the Apple ID and password before you can reset the device, sign out of iCloud, or turn off Find my iPhone. So as long as you didn't turn off Activation Lock, the person can't reset your device. (You probably didn't, it's one of those hidden settings that are hard to find anyway.) If you login to iCloud with your Apple ID and password, you can use this page to see if activation lock is on or not: https://www.icloud.com/activatio.... (You have to know the serial number of your iPhone for that though, and I'm not sure how you can do that since you don't have the iPhone.) I know lost mode can be turned on on iCloud in the Find My iPhone app, or you can do it on other devices associated with the same Apple ID as your lost iPhone. Lost mode allows you to lock the person out of the device (can't get back in unless they know your passcode or unless they have a fingerprint registered). It also lets you put a contact phone number and a message on there, so they will know who to return it to.I don't think your SIM being taken out will stop you from tracking it. Others are saying it would, I'm not really knowledgeable about that. If they join a wifi network, you should be able to find it (again, only if they didn't completely reset it). I am not 100% sure what will happen if they reset it, because I've just never had to think about it or deal with that before.I'm so sorry you lost your iPhone! I do hope you'll find it soon safe and sound! Thanks for asking me to answer!

Two mobile phones are next to each other, each using the same tower using the same service. Why is there is a drastic difference in the signal bars?

Hey,If you have two iPhones and they are both using the same carrier, the signal bars can actually decrease. When an iPhone measures signal strength it uses available bandwidth, signal to noise and distance from the cell tower to measure the signal bars. When you put the two iPhone together they can pick up the Signal to noise ratio between them and other phones connected to the cell site therefore they show less signal. It could be that the Cell Tower is doing a technique known as 'Cell Breathing'. Basically when the tower gets overloaded with phones, it uses Cell Breathing to reduce its coverage area. Phones that are further away from the Tower get weaker signals as they can't hear the tower very well, and then they usually latch onto a different, stronger tower. It could be the first phone is one of the connected call and the other phone's signal is being degraded by the Cell Breathing.It could be one phone is on LTE and the other is on 3G/2G. Signal strength is measured differently on 4G LTE than it is on 4G/3G/2G. Where you would normally get a five bar 2G/3G signal, you would get a two bar LTE signal. If both phones are using LTE, they may be using different bands. For example, one is on 700Mhz which can penetrate walls greatly and travel great distances. The other phone is on the 1700Mhz, which can't penetrate buildings as well as 700..If they are using a different channel, bandwidth might be low on one channel, but high on the other channel. Use Find a better signal - you can put your zip code/City and State and pick which carrier towers you want to view. If your carrier has two towers close by, the phone's could be switching towers. If you are using an Android phone I would suggest using this app: Network Signal Info - Android Apps on Google Play it will show you the cell ID, if the phone's are using the same Cell ID, you know for certain they're using different bands or channels.

Smartphones: Can I use GPS without enabling internet on my phone?

If your phone has a GPS chip, you should be able to use it. It may get a faster fix if it can use internet or cell data for assistance (AGPS), but it doesn't need it.The accuracy of a GPS fix has nothing to do with the OS; it's determined by the hardware in the phone - the receiver and antenna, shoe-horned into something primarily designed for a different function. Most phones are not as good as most dedicated GPS sets, or Bluetooth GPS you can use with a phone.Some applications require an internet connection to get maps, such as older versions of Google Maps. Some have a cache mode where you can pre-load maps over wifi, e.g.  using OpenStreetMap data.Some phones do not have a GPS chip, but can still show your location based on wifi identification  and cell tower data (e.g. Google Maps). Sometimes people call that GPS but it's not - GPS specifically means the US satellite system. Non-GPS locations may be wrong by kilometres, away from urban centres. One showed my boat sailing up a street some miles inland.Accuracy is hard to measure. It depends on conditions - trees and tall buildings create echoes. The GPS chip has a measure of accuracy (dilution of precision), which may appear on a phone app, or not. If you can retrace your steps many times, and get the same trace, then you have real accuracy.This is a wooded area near Squamish. The yellow trace is my phone (Nokia E71).Red is a tablet (Nokia N810), purple another tablet  (Asus ME173X). Ideally, those traces should overlap - I was either carrying both devices at the same time, or walked the same trail hours or days later.This is the same area using a Garmin GLO bluetooth set, as logged by the tablet.The GLO is clearly much more accurate than the phone.On an open road away from obstacles, I might expect 20m accuracy from the phone and 5m from the GLO.